空 kōng/kòng, empty/air/sky/in vain, to empty/vacant/unoccupied/space/leisure/free time 空间 kōngjiān, [空間], space/room/(fig.) scope/leeway/(astronomy) outer space/(physics, math.) space 空气 kōngqì, [空氣], air/atmosphere 太空 tàikōng, outer space 有空 yǒukòng, to have time (to do sth) 天空 tiānkōng, sky 空中 kōngzhōng, in the sky/in the air 航空 hángkōng, aviation 空军 kōngjūn, [空軍], air force 时空 shíkōng, [時空], time and place/world of a particular locale and era/(physics) space-time 空白 kòngbái, blank space 空手 kōngshǒu, empty-handed/unarmed/(painting, embroidery etc) without following a model/(abbr.... 空调 kōngtiáo, [空調], air conditioning/air conditioner (including units that have a heating mode)/CL:臺... 空虚 kōngxū, [空虛], hollow/emptiness/meaningless 太空船 tàikōngchuán, spaceship 上空 shàngkōng, overhead/in the sky 空地 kōngdì/kòngdì, air-to-surface (missile), vacant land/open space 凭空 píngkōng, [憑空], baseless (lie)/without foundation 空姐 kōngjiě, abbr. for 空中小姐/stewardess/air hostess/female flight attendant 空缺 kòngquē, vacancy 抽空 chōukòng, to find the time to do sth 空闲 kòngxián, [空閒], idle/free time/leisure/unused (place) 空袭 kōngxí, [空襲], air raid/attack from the air 高空 gāokōng, high altitude 空洞 kōngdòng, cavity/empty/vacuous 升空 shēngkōng, [昇空], to rise to the sky/to lift off/to levitate/liftoff 空位 kōngwèi, empty place/room (for sb) 空前 kōngqián, unprecedented 真空 zhēnkōng, vacuum 空间站 kōngjiānzhàn, [空間站], space station 航空局 hángkōngjú, aviation agency 空旷 kōngkuàng, [空曠], spacious and empty/void 太空人 tàikōngrén, astronaut 空运 kōngyùn, [空運], air transport 落空 làokōng/luòkōng/luòkòng, to fail to achieve something/to be fruitless, to fail/to fall through/to come to... 防空 fángkōng, anti-aircraft defense 防空洞 fángkōngdòng, air-raid shelter 半空 bànkōng, midair 星空 xīngkōng, starry sky/the heavens 空荡荡 kōngdàngdàng, [空蕩蕩], absolutely empty (space)/complete vacuum 空空 kōngkōng, empty/vacuous/nothing/vacant/in vain/all for nothing/air-to-air (missile) 空无一人 kōngwúyīrén, [空無一人], not a soul in sight (idiom) 空想 kōngxiǎng, daydream/fantasy/to fantasize 领空 lǐngkōng, [領空], territorial air space 夜空 yèkōng, night sky 掏空 tāokōng, to hollow out/to empty out/to use up/(finance) tunneling 空隙 kòngxì, crack/gap between two objects/gap in time between two events 两手空空 liǎngshǒukōngkōng, [兩手空空], empty-handed (idiom); fig. not receiving anything 空难 kōngnàn, [空難], air crash/aviation accident or incident 赤手空拳 chìshǒukōngquán, empty hand, empty fist (idiom); having nothing to rely on/unarmed and defenseles... 后空翻 hòukōngfān, [後空翻], backward somersault/backflip 腾空 téngkōng, [騰空], to soar/to rise high into the air 洗劫一空 xǐjiéyīkōng, to steal everything 空心 kōngxīn/kòngxīn, hollow/empty headed/mindless, on an empty stomach 太空舱 tàikōngcāng, [太空艙], space capsule/ejection capsule (cabin) 空谈 kōngtán, [空談], prattle/idle chit-chat 空投 kōngtóu, air drop/to drop supplies by air 空子 kòngzi, gap/unoccupied space or time/fig. gap/loophole 空话 kōnghuà, [空話], empty talk/bunk/malicious gossip 空余 kòngyú, [空餘], free/vacant/unoccupied 空空如也 kōngkōngrúyě, as empty as anything (idiom); completely bereft/to have nothing/vacuous/hollow/e... 空降 kōngjiàng, to drop from the sky/(fig.) to appear out of nowhere/(attributive) airborne 司空见惯 sīkōngjiànguàn, [司空見慣], a common occurrence (idiom) 太空站 tàikōngzhàn, space station 航空母舰 hángkōngmǔjiàn, [航空母艦], aircraft carrier/CL:艘[sōu]/(coll.) (fig.) sth huge/(like) a whale 一场空 yīchángkōng, [一場空], all one's hopes and efforts come to nothing/futile 空格 kònggé, blank/blank space on a form/space/囗 (indicating missing or illegible character) 空前绝后 kōngqiánjuéhòu, [空前絕後], unprecedented and never to be duplicated/the first and the last/unmatched/unique 空置 kōngzhì, to set sth aside/to let sth lie idle/idle/unused 空想家 kōngxiǎngjiā, impractical dreamer 空头 kōngtóu, [空頭], phony/so-called/armchair (expert)/vain (promise)/(finance) short-seller/bear (ma... 低空 dīkōng, low altitude 空中小姐 kōngzhōngxiǎojiě, stewardess/air hostess 天马行空 tiānmǎxíngkōng, [天馬行空], like a heavenly steed, soaring across the skies (idiom)/(of writing, calligraphy... 空挡 kōngdǎng, [空擋], neutral gear 空当 kòngdāng, [空當], gap/interval 空空荡荡 kōngkōngdàngdàng, [空空盪盪]/[空空蕩蕩], deserted, absolutely empty (space)/complete vacuum 中空 zhōngkōng, hollow/empty interior 空腹 kōngfù, an empty stomach 亏空 kuīkōng, [虧空], in debt/in the red/in deficit 空儿 kòngr, [空兒], spare time/free time 太空服 tàikōngfú, spacesuit 空穴来风 kōngxuéláifēng, [空穴來風], lit. wind from an empty cave (idiom)/fig. unfounded (story)/baseless (claim) 凭空捏造 píngkōngniēzào, [憑空捏造], fabrication relying on nothing (idiom); frame-up 钻空子 zuānkòngzi, [鑽空子], lit. to drill a hole/to take advantage of a loophole/to exploit an advantage/to ... 一扫而空 yīsǎoérkōng, [一掃而空], to sweep clean/to clean out 凌空 língkōng, be high up in the sky 目空一切 mùkōngyīqiè, the eye can see nothing worthwhile all around (idiom); arrogant/condescending/su... 空降兵 kōngjiàngbīng, paratroopers 海陆空 hǎilùkòng, [海陸空], sea land air (transport, or military operations) 放空 fàngkōng, to relax completely/to empty one's mind/(finance) to sell short/(of a commercial... 悬空 xuánkōng, [懸空], to hang in the air/suspended in midair/(fig.) uncertain 虚空 xūkōng, [虛空], void/hollow/empty 人去楼空 rénqùlóukōng, [人去樓空], the people are gone and the place is empty (idiom)/the sight of a deserted place... 得空 dékòng, to have leisure time 挖空心思 wākōngxīnsi, to dig for thoughts (idiom); to search everything for an answer/to rack one's br... 长空 chángkōng, [長空], (literary) the vast sky/(finance) eventual downturn/poor prospects in the long t... 晴空万里 qíngkōngwànlǐ, [晴空萬里], a clear and boundless sky 空战 kōngzhàn, [空戰], air war/air warfare 空肠 kōngcháng, [空腸], jejunum (empty gut, middle segment of small intestine between duodenum 十二指腸|十二指肠... 镂空 lòukōng, [鏤空], openwork/fretwork 架空 jiàkōng, to build (a hut etc) on stilts/to install (power lines etc) overhead/(fig.) unfo... 盛况空前 shèngkuàngkōngqián, [盛況空前], a magnificent and unprecedented event (idiom) 空防 kōngfáng, air force/air defense 空中楼阁 kōngzhōnglóugé, [空中樓閣], pavilion in the air (idiom); unrealistic Utopian construction/castles in Spain/i... 填空 tiánkòng, to fill a job vacancy/to fill in a blank (e.g. on questionnaire or exam paper) 万人空巷 wànrénkōngxiàng, [萬人空巷], the multitudes come out from everywhere, emptying every alleyway (to celebrate)/... 真空管 zhēnkōngguǎn, vacuum tube 空港 kōnggǎng, airport (abbr. for 航空港[háng kōng gǎng]) 空泛 kōngfàn, vague and general/not specific/shallow/empty 扑空 pūkōng, [撲空], lit. to rush at thin air/fig. to miss one's aim/to have nothing to show for one'... 空洞无物 kōngdòngwúwù, [空洞無物], empty cave, nothing there (idiom); devoid of substance/nothing new to show 空格键 kònggéjiàn, [空格鍵], space bar (keyboard) 孙悟空 SūnWùkōng, [孫悟空], Sun Wukong, the Monkey King, character with supernatural powers in the novel Jou... 偷空 tōukòng, to take some time out/to make use of a spare moment 全日空 QuánRìkōng, All Nippon Airways (ANA) 东方航空 DōngfāngHángkōng, [東方航空], China Eastern Airlines 空暇 kòngxiá, idle/free time/leisure 空客 Kōngkè, Airbus (abbr. for 空中客車|空中客车[Kōng zhōng Kè chē]) 放空炮 fàngkōngpào, (lit.) to fire blank shots/(fig.) to be all talk and no action/to shoot one's mo... 航空站 hángkōngzhàn, air terminal 航空学 hángkōngxué, [航空學], aviation science 空城计 kōngchéngjì, [空城計], the empty city stratagem (in which Zhuge Liang presents himself as unperturbed w... 真空泵 zhēnkōngbèng, vacuum pump 空穴 kòngxué, electron hole (physics) 空额 kòngé, [空額], vacancy/unfilled work place 碧空 bìkōng, the blue sky 一纸空文 yīzhǐkōngwén, [一紙空文], a worthless piece of paper (idiom) 航空器 hángkōngqì, aircraft 航空信 hángkōngxìn, airmail letter 坐吃山空 zuòchīshānkōng, lit. just sitting and eating, one can deplete even a mountain of wealth (idiom)/... 一空 yīkōng, leaving none left/(sold etc) out 三维空间 sānwéikōngjiān, [三維空間], three-dimensional space/3D 上升空间 shàngshēngkōngjiān, [上升空間], upside/potential to rise 上空洗车 shàngkōngxǐchē, [上空洗車], topless car wash 不空成就佛 Bùkōngchéngjiùfó, Amoghasiddhi Buddha 中华航空公司 ZhōnghuáHángkōngGōngsī, [中華航空公司], China Airlines (Taiwan)/abbr. to 華航|华航[Huá háng] 中国东方航空 ZhōngguóDōngfāngHángkōng, [中國東方航空], China Eastern Airlines 中国人民解放军空军 ZhōngguóRénmínJiěfàngjūnKōngjūn, [中國人民解放軍空軍], People's Liberation Army Air Force (PLAAF) 中国国际航空公司 ZhōngguóGuójìHángkōngGōngsī, [中國國際航空公司], Air China Ltd. 中国民用航空局 ZhōngguóMínyòngHángkōngjú, [中國民用航空局], Civil Aviation Administration of China (CAAC) 中国联合航空 ZhōngguóLiánhéHángkōng, [中國聯合航空], China United Airlines 中国航空工业公司 ZhōngguóHángkōngGōngyèGōngsī, [中國航空工業公司], Aviation Industries of China (AVIC) 中国航空运输协会 ZhōngguóHángkōngYùnshūXiéhuì, [中國航空運輸協會], China Air Transport Association (CATA) 中空玻璃 zhōngkōngbōli, double glazing 中高度防空 zhōnggāodùfángkōng, high-to-medium-altitude air defense (HIMAD) 买空 mǎikōng, [買空], to buy on margin (finance) 买空卖空 mǎikōngmàikōng, [買空賣空], to speculate/to play the market/(fig.) to sell hot air/to swindle people by posi... 乳白天空 rǔbáitiānkōng, whiteout 人财两空 réncáiliǎngkōng, [人財兩空], loss of life and property/to lose the beauty and her possessions 仿射子空间 fǎngshèzǐkōngjiān, [仿射子空間], affine subspace (math.) 仿射空间 fǎngshèkōngjiān, [仿射空間], affine space (math.) 众创空间 zhòngchuàngkōngjiān, [眾創空間], hackerspace 位形空间 wèixíngkōngjiān, [位形空間], configuration space (math.) 低空跳伞 dīkōngtiàosǎn, [低空跳傘], BASE Jumping 低空飞过 dīkōngfēiguò, [低空飛過], to just scrape through with a narrow pass (in an exam) 侧空翻 cèkōngfān, [側空翻], aerial cartwheel/side somersault 倒空 dàokōng, to empty (a bag)/to turn inside out/to turn out 假大空 jiǎdàkōng, empty words/bogus speech 凿空 záokōng, [鑿空], to open an aperture/(extended meaning) to cut a way through/to open up a road 切空间 qiēkōngjiān, [切空間], space of sections (math.) 前空翻 qiánkōngfān, forward somersault/front flip 劈空扳害 pīkōngbānhài, damaged by groundless slander (idiom) 北京航空学院 BěijīngHángkōngXuéyuàn, [北京航空學院], Beijing Aeronautical and Astronautical Institute (abbr. to 北航院) 北京航空航天大学 BěijīngHángkōngHángtiānDàxué, [北京航空航天大學], Beijing University of Aeronautics and Astronautics 北欧航空公司 BěiŌuHángkōngGōngsī, [北歐航空公司], Scandinavian Airlines (SAS) 半空中 bànkōngzhōng, in midair/in the air 卖空 màikōng, [賣空], to sell short (finance) 印度航空公司 Yìndùhángkōnggōngsī, Air India 参量空间 cānliàngkōngjiān, [參量空間], moduli space (math.)/parameter space 反空降 fǎnkōngjiàng, anti-aircraft defense 吃空额 chīkòngè, [吃空額], to embezzle by adding to the payroll employees existing in name only 吃空饷 chīkòngxiǎng, [吃空餉], to embezzle by adding to the payroll employees existing in name only 哈伯太空望远镜 HābóTàikōngWàngyuǎnjìng, [哈伯太空望遠鏡], Hubble Space Telescope 唱空城计 chàngkōngchéngjì, [唱空城計], lit. to sing “The Empty City Stratagem” (idiom)/fig. to put up a bluff to concea... 四大皆空 sìdàjiēkōng, lit. the four elements are vanity (idiom)/this world is an illusion 四维空间 sìwéikōngjiān, [四維空間], four-dimensional space (math.) 回空 huíkōng, to return empty (i.e. to drive back with no passengers or freight) 国家航空公司 guójiāhángkōnggōngsī, [國家航空公司], flag carrier 国泰航空 GuótàiHángkōng, [國泰航空], Cathay Pacific, Hong Kong-based airline 国际太空站 guójìtàikōngzhàn, [國際太空站], International Space Station 国际航空联合会 GuójìHángkōngLiánhéhuì, [國際航空聯合會], Fédération Aéronautique Internationale (FAI), world body of gliding and aeronaut... 国际航空运输协会 GuójìHángkōngYùnshūXiéhuì, [國際航空運輸協會], International Air Transport Association (IATA) 在真空中 zàizhēnkōngzhōng, in a vacuum 地对空导弹 dìduìkōngdǎodàn, [地對空導彈], ground-to-air missile 坐标空间 zuòbiāokōngjiān, [座標空間], coordinate space 外太空 wàitàikōng, outer space 外层空间 wàicéngkōngjiān, [外層空間], outer space 大型空爆炸弹 dàxíngkōngbàozhàdàn, [大型空爆炸彈], Massive Ordinance Air Blast (MOAB), a powerful American bomb 大韩航空 DàhánHángkōng, [大韓航空], Korean Air, South Korea's main airline 天低吴楚，眼空无物 tiāndīWúChǔ,yǎnkōngwúwù, [天低吳楚，眼空無物], the sky hangs low over the Yangtze, empty as far as the eye can see (idiom); not... 太空探索 tàikōngtànsuǒ, space exploration 太空梭 tàikōngsuō, space shuttle 太空步 tàikōngbù, moonwalk (dance) 太空游 tàikōngyóu, [太空遊], space tourism 太空漫步 tàikōngmànbù, space walk 太空舞步 tàikōngwǔbù, moonwalk (dance) 太空行走 tàikōngxíngzǒu, spacewalk 太空飞船 tàikōngfēichuán, [太空飛船], space shuttle 妙手空空 miàoshǒukōngkōng, petty thief (lit. quick fingered and vanish)/empty-handed/having nothing 子空间 zǐkōngjiān, [子空間], subspace (math.) 守空房 shǒukōngfáng, to stay home alone (of married woman) 对称空间 duìchènkōngjiān, [對稱空間], symmetric space (math.) 对空射击 duìkōngshèjī, [對空射擊], anti-aircraft fire/to shoot at enemy planes 对空火器 duìkōnghuǒqì, [對空火器], anti-aircraft gun 希望落空 xīwàngluòkōng, hopes are dashed 平空 píngkōng, variant of 憑空|凭空[píng kōng] 平行时空 píngxíngshíkōng, [平行時空], parallel universe 弯曲空间 wānqūkōngjiān, [彎曲空間], curved space 当空 dāngkōng, [當空], overhead/up in the sky 德国汉莎航空公司 DéguóHànshāHángkōngGōngsī, [德國漢莎航空公司], Deutsche Lufthansa AG 悟空 WùKōng, Sun Wukong, the Monkey King, character with supernatural powers from the novel J... 悬空寺 XuánkōngSì, [懸空寺], Xuankong Temple or Suspended Temple near Yanyuan in Shanxi 抛空 pāokōng, [拋空], to short-sell (finance) 拓扑空间 tuòpūkōngjiān, [拓撲空間], topological space (math.) 拨空 bōkòng, [撥空], to make time 挂空挡 guàkōngdǎng, [掛空擋], see 放空擋|放空挡[fàng kōng dǎng] 挖空 wākōng, to excavate/to hollow 捷达航空货运 JiédáHángkōngHuòyùn, [捷達航空貨運], Jett8 Airlines Cargo (based in Singapore) 排空 páikōng, to fly up to the sky 放空挡 fàngkōngdǎng, [放空擋], to coast along in neutral gear (in a car)/(coll.) to go commando 政权真空 zhèngquánzhēnkōng, [政權真空], power vacuum/political vacuum 日本航空 RìběnHángkōng, Japan Airlines (JAL) 时空旅行 shíkōnglǚxíng, [時空旅行], time travel 时空穿梭 shíkōngchuānsuō, [時空穿梭], time travel 时空穿越 shíkōngchuānyuè, [時空穿越], time travel 时空胶囊 shíkōngjiāonáng, [時空膠囊], time capsule (Tw) 时空错置 shíkōngcuòzhì, [時空錯置], having elements from another time or place 时空错置感 shíkōngcuòzhìgǎn, [時空錯置感], sense of being in another time and place/feeling that one has entered a time war... 架空索道 jiàkōngsuǒdào, aerial ropeway/cable car 核动力航空母舰 hédònglìhángkōngmǔjiàn, [核動力航空母艦], nuclear-powered aircraft carrier 横空 héngkōng, [橫空], filling the atmosphere/covering the sky 没空儿 méikòngr, [沒空兒], having no time 法国航空 FǎguóHángkōng, [法國航空], Air France 法国航空公司 FǎguóHángkōngGōngsī, [法國航空公司], Air France 海空军 hǎikōngjūn, [海空軍], navy and air force 海空军基地 hǎikōngjūnjīdì, [海空軍基地], naval and air military base 海阔天空 hǎikuòtiānkōng, [海闊天空], wide sea and sky (idiom); boundless open vistas/the whole wide world/chatting ab... 深空 shēnkōng, deep space (outer space) 清空 qīngkōng, to clear/to empty 港龙航空 GǎnglóngHángkōng, [港龍航空], Hong Kong Dragon Airlines (operating as Dragonair), Hong Kong-based internationa... 特种空勤团 Tèzhǒngkōngqíntuán, [特種空勤團], Special Air Service (SAS) 独守空房 dúshǒukōngfáng, [獨守空房], (of a married woman) to stay home alone 电子空间 diànzǐkōngjiān, [電子空間], cyberspace 留空 liúkòng, to leave blank space in a document/to leave some time free 目空四海 mùkōngsìhǎi, the eye can see nothing worthwhile all around (idiom); arrogant/condescending/su... 相空间 xiàngkōngjiān, [相空間], phase space (math., ordinary differential equations) 短空 duǎnkōng, poor prospects in the short term (finance) 空中交通管制 kōngzhōngjiāotōngguǎnzhì, air traffic control 空中交通管制员 kōngzhōngjiāotōngguǎnzhìyuán, [空中交通管制員], air traffic controller 空中分列 kōngzhōngfēnliè, (military) flyover 空中客车 KōngzhōngKèchē, [空中客車], Airbus (aerospace company) 空中少爷 kōngzhōngshàoye, [空中少爺], airline steward 空中格斗 kōngzhōnggédòu, [空中格鬥], dogfight (of planes) 空中炮舰 kōngzhōngpàojiàn, [空中砲艦], gunship (aircraft) 空中花园 kōngzhōnghuāyuán, [空中花園], hanging gardens (Babylon etc)/rooftop garden 空中飘浮 kōngzhōngpiāofú, [空中飄浮], to float in the air 空中飞人 kōngzhōngfēirén, [空中飛人], trapeze artist/frequent flyer 空乘 kōngchéng, flight attendant/on-board service 空军一号 KōngjūnYīhào, [空軍一號], Air Force One, US presidential jet 空军司令 kōngjūnsīlìng, [空軍司令], air commodore/top commander of air force 空军基地 kōngjūnjīdì, [空軍基地], air base 空匮 kòngkuì, [空匱], scarce/poor 空口 kōngkǒu, incomplete meal of a single dish/meat or vegetable dish without rice or wine/ric... 空口白话 kōngkǒubáihuà, [空口白話], empty promises 空口说白话 kōngkǒushuōbáihuà, [空口說白話], to make empty promises 空号 kōnghào, [空號], disconnected phone number/unassigned phone number 空名 kōngmíng, vacuous reputation/name without substance/in name only/so-called 空喊 kōnghǎn, idle clamor/to prattle 空地导弹 kòngdìdǎodàn, [空地導彈], air-to-surface missile 空头市场 kōngtóushìcháng, [空頭市場], bear market 空嫂 kōngsǎo, married stewardess of mature age 空室清野 kōngshìqīngyě, empty room, clean field (idiom); clean out everything to leave nothing for the e... 空对地 kōngduìdì, [空對地], air-to-surface (missile) 空对空导弹 kōngduìkōngdǎodàn, [空對空導彈], air-to-air missile 空少 kōngshào, airline steward (abbr. for 空中少爺|空中少爷[kōng zhōng shào ye]) 空巢 kōngcháo, empty nest/a home where the kids have grown up and moved out 空幻 kōnghuàn, vanity/empty fantasy/illusion 空心儿 kòngxīnr, [空心兒], erhua variant of 空心[kòng xīn] 空心墙 kōngxīnqiáng, [空心牆], cavity wall/hollow wall 空心大老官 kōngxīndàlǎoguān, fake important personage/sham 空心球 kōngxīnqiú, hollow ball/(basketball) swish shot 空心老大 kōngxīnlǎodà, pretentious and vacuous person 空心菜 kōngxīncài, see 蕹菜[wèng cài] 空心萝卜 kōngxīnluóbo, [空心蘿蔔], useless person 空心面 kōngxīnmiàn, [空心麵], macaroni 空怒 kōngnù, air rage 空性 kōngxìng, emptiness 空想社会主义 kōngxiǎngshèhuìzhǔyì, [空想社會主義], utopian socialism 空房间 kōngfángjiān, [空房間], vacant room 空手而归 kōngshǒuérguī, [空手而歸], to return empty-handed/to fail to win anything 空手道 kōngshǒudào, karate 空拍 kōngpāi, aerial photography (video or still) (Tw) 空拍机 kōngpāijī, [空拍機], drone equipped for aerial photography 空无所有 kōngwúsuǒyǒu, [空無所有], having nothing (idiom); utterly destitute/without two sticks to rub together 空日 kòngrì, day that is named but not numbered (on ethnic calendar) 空服员 kōngfúyuán, [空服員], flight attendant/cabin crew 空档 kòngdàng, [空檔], gap (between two objects)/interval of time (between events)/opening in one's sch... 空气净化器 kōngqìjìnghuàqì, [空氣淨化器], air purifier 空气剂量 kōngqìjìliàng, [空氣劑量], air dose 空气动力 kōngqìdònglì, [空氣動力], aerodynamic force 空气动力学 kōngqìdònglìxué, [空氣動力學], aerodynamics 空气取样 kōngqìqǔyàng, [空氣取樣], air sampling 空气取样器 kōngqìqǔyàngqì, [空氣取樣器], air sampler 空气污染 kōngqìwūrǎn, [空氣污染], air pollution 空气流 kōngqìliú, [空氣流], flow of air/draft 空气流通 kōngqìliútōng, [空氣流通], fresh air/draft 空气缓冲间 kōngqìhuǎnchōngjiān, [空氣緩衝間], air lock 空气调节 kōngqìtiáojié, [空氣調節], air conditioning 空气阻力 kōngqìzǔlì, [空氣阻力], atmospheric drag 空疏 kōngshū, shallow/empty 空白支票 kòngbáizhīpiào, blank check 空白点 kòngbáidiǎn, [空白點], gap/empty space 空着手 kōngzheshǒu, [空著手], empty-handed 空穴来风未必无因 kòngxuéláifēngwèibìwúyīn, [空穴來風未必無因], wind does not come from an empty cave without reason/there's no smoke without fi... 空空导弹 kōngkōngdǎodàn, [空空導彈], air-to-air missile 空空洞洞 kōngkōngdòngdòng, empty/hollow/lacking in substance 空窗期 kōngchuāngqī, window period (time between infection and the appearance of detectable antibodie... 空竹 kōngzhú, Chinese yo-yo 空翻 kōngfān, flip/somersault 空腔 kōngqiāng, cavity 空腹高心 kōngfùgāoxīn, ambitious despite a lack of talent (idiom) 空落落 kōngluòluò, empty/desolate 空话连篇 kōnghuàliánpiān, [空話連篇], long-winded empty talk 空调车 kōngtiáochē, [空調車], air conditioned vehicle 空谷足音 kōnggǔzúyīn, the sound of footsteps in a deserted valley (idiom)/sth hard to come by/sth wond... 空跑一趟 kōngpǎoyītàng, to make a journey for nothing 空身 kōngshēn, empty handed (carrying nothing)/alone 空载 kōngzài, [空載], (of a ship, train etc) not carrying any load (i.e. no passengers or freight etc)... 空运费 kōngyùnfèi, [空運費], air freight (cost of air transport) 空钟 kōngzhong, [空鐘], diabolo/Chinese yo-yo 空间局 kōngjiānjú, [空間局], space agency 空间探测 kōngjiāntàncè, [空間探測], space probe 空阒 kōngqù, [空闃], empty and quiet 空集 kōngjí, empty set (set theory) 穿越时空 chuānyuèshíkōng, [穿越時空], to travel through time 竹篮打水，一场空 zhúlándǎshuǐ,yīchángkōng, [竹籃打水，一場空], using a wicker basket to draw water (idiom); wasted effort 笥匮囊空 sìkuìnángkōng, [笥匱囊空], extremely destitute (idiom) 网络空间 wǎngluòkōngjiān, [網絡空間], cyberspace 美国国家航天航空局 MěiguóGuójiāHángtiānHángkōngjú, [美國國家航天航空局], National Aeronautics and Space Administration/NASA 美国国家航空航天局 MěiguóGuójiāHángkōngHángtiānjú, [美國國家航空航天局], NASA, National Aeronautics and Space Administration, agency of US government 美国联邦航空局 MěiguóLiánbāngHángkōngjú, [美國聯邦航空局], Federal Aviation Authority (FAA) 美国航空 MěiguóHángkōng, [美國航空], American Airlines 美国航空公司 MěiguóHángkōngGōngsī, [美國航空公司], American Airlines 翻空出奇 fānkōngchūqí, to overturn empty convention, and display originality (idiom); new and different... 育空 Yùkōng, Yukon (Canadian territory adjacent to Alaska) 脱空 tuōkōng, [脫空], to fail/to come to nothing/to fall through (of plans, hopes)/to lie 脱空汉 tuōkōnghàn, [脫空漢], liar 航空业 hángkōngyè, [航空業], aviation industry 航空事业 hángkōngshìyè, [航空事業], aviation industry 航空公司 hángkōnggōngsī, airline/CL:家[jiā] 航空术 hángkōngshù, [航空術], aeronautics 航空母舰战斗群 hángkōngmǔjiànzhàndòuqún, [航空母艦戰鬥群], carrier-based vanguard group (CBVG)/naval battle group led by an aircraft carrie... 航空港 hángkōnggǎng, airfield/aerodrome 航空线 hángkōngxiàn, [航空線], aviation line 航空自卫队 hángkōngzìwèiduì, [航空自衛隊], air self-defense force 航空航天局 hángkōnghángtiānjú, air and space agency 航空运单 hángkōngyùndān, [航空運單], Air Waybill (AWB) 航空邮件 hángkōngyóujiàn, [航空郵件], airmail 航空邮简 hángkōngyóujiǎn, [航空郵簡], aerogram 荷兰皇家航空 HélánHuángjiāHángkōng, [荷蘭皇家航空], KLM Royal Dutch Airlines 蒸发空调 zhēngfākōngtiáo, [蒸發空調], evaporative air conditioner/evaporative cooler 虚空藏菩萨 XūkōngzàngPúsà, [虛空藏菩薩], Akasagarbha Bodhisattva 西北航空公司 XīběiHángkōngGōngsī, Northwest Airlines 视空间系统 shìkōngjiānxìtǒng, [視空間系統], visuo-spatial sketchpad 语义空间 yǔyìkōngjiān, [語義空間], semantic space 超维空间 chāowéikōngjiān, [超維空間], hyperspace/superspace/higher dimensional space 轨道空间站 guǐdàokōngjiānzhàn, [軌道空間站], orbiting space station 载人轨道空间站 zàirénguǐdàokōngjiānzhàn, [載人軌道空間站], manned orbiting space station 达美航空 DáměiHángkōng, [達美航空], Delta Air Lines, Inc., airline headquartered in Atlanta, Georgia 送上太空 sòngshàngtàikōng, to launch into space 遁入空门 dùnrùkōngmén, [遁入空門], to take refuge in religious life 那空沙旺 Nàkōngshāwàng, Paknampho city, Thailand 长荣航空 ChángróngHángkōng, [長榮航空], EVA Air, Taiwanese international airline 闯空门 chuǎngkōngmén, [闖空門], to break into a house when nobody is home 闲空 xiánkòng, [閒空], idle/free time/leisure 阿空加瓜 Ākōngjiāguā, Cerro Aconcagua, mountain in the Americas 阿空加瓜山 ĀkōngjiāguāShān, Mount Aconcagua, Argentina, the highest point in the Western Hemisphere 阿联酋航空 ĀliánqiúHángkōng, [阿聯酋航空], Emirates (airline) 陆海空三军 lùhǎikōngsānjūn, [陸海空三軍], army, navy, air force 陆海空军 lùhǎikōngjūn, [陸海空軍], army, navy and air force 非空 fēikōng, nonempty (set) 韩亚航空 HányàHángkōng, [韓亞航空], Asiana Airlines, South Korean airline 高空作业 gāokōngzuòyè, [高空作業], to work high above the ground 高空俱乐部 GāokōngJùlèbù, [高空俱樂部], Mile High Club 高空弹跳 gāokōngtántiào, [高空彈跳], bungee jumping (Tw) 高空病 gāokōngbìng, high altitude sickness 高维空间 gāowéikōngjiān, [高維空間], (math.) higher dimensional space 鹰击长空 yīngjīchángkōng, [鷹擊長空], the eagle soars in the sky (citation from Mao Zedong) 黎曼空间 Límànkōngjiān, [黎曼空間], Riemannian space (physics)