形 （不包含什么； 里面没有东西或没有内容； 不切实际的） empty，hollow，void；名 sky，air，[佛教] emptiness，void of the world of senses；副 （没有效果； 白白地） for nothing，in vain；

[例句] 我去踢球却踢了个空。 I went to kick the ball and I completely missed it.

[例句] 房间仍然很简朴，四面都是饰有圆点的绿色空墙。 The room remains simple with bare, stippled green walls.

interval，gap，space，clearance，interspace ；

[例句] 只要前面出现一点空隙他就会亮起前车灯并超车. He flashed his headlights and jumped lanes whenever a gap opened up.

[例句] 请用报纸填塞空隙. Wad the space with paper, please.

space，enclosure，room，blank，interspace ；

[例句] “沙锥鸟”战斗机的驾驶舱空间不太宽敞。 There was not much elbow room in the cockpit of a Snipe.

[例句] 母亲为胎儿提供营养和成长的空间。 The mother provides the embryo with nourishment and a place to grow.

[物] vacuum，empty space，void，vacuo ；

[例句] 元帅迈过真空吸尘器，脚步沉重地走出了房间。 The Marshal stepped over the vacuum-cleaner and stumped out of the room.

[例句] 真空包装的火腿片应在食用前30分钟把包装除去。 Vacuum-packed ham slices should be unwrapped 30 minutes before serving.

blank space，gap，margin，blank，blankness ；

[例句] 信写好后把它装进空白信封里封好。 Write your letter and seal it in a blank envelope.

[例句] 当他们判定我们有罪时，我的脑子顿时一片空白。 When they found us guilty, I just went blank.

名 sky，heaven；

[例句] 清晨，天空呈现出斑驳的深灰色。 In the mornings the sky appeared a heavy shade of mottled gray.

[例句] 那天一反常态，天空阳光明媚。 For a change, it was a gloriously sunny day.

aviation，voyage，avigation，navigate ；

[例句] 这家航空公司亏损达3,500万美元，而澳航出资帮助其摆脱了困境。 The airline had losses of $35m and was bailed out by Qantas.

[例句] 两家航空公司将在票务和航班安排上展开合作。 The two airlines will cooperate on ticketing and schedules.

air transport，air freight，airlift，ferry，air parcel ；

[例句] 加西亚总统已经下令空运食品、药物和毛毯。 President Garcia has ordered an airlift of food, medicines and blankets.

[例句] 货物可通过平寄或空运发送。 Goods may be sent by surface mail or airmail.

built on stilts，be without foundations，fanciful，impracticable ；

[例句] 这里的竹楼都是架空的. The bamboo huts here are all built on stilts.

[例句] 而他这理想未必完全是架空的. These were no castles in the air.

air-drop，paradrop，aerial delivery，air drop，airdrop ；

[例句] 传单被空投下来，要求人们离开某些地区。 Leaflets have been air dropped telling people to leave certain areas.

[例句] 飞机用降落伞空投补给。 Planes dropped supplies by parachute.

air force，air service，airman ；

[例句] 英国皇家空军表彰他是一名非常能干的机械师。 The RAF recognized him as an out-standingly able engineer.

[例句] 阿富汗空军正用直升机向被围城镇提供补给。 The Afghan air force was using helicopters to supply the besieged town.

idling，racing，turn without moving forward，spin ；

[例句] 在树林的那一边，一架小飞机停在那里，发动机在空转。 Beyond a stand of trees a small plane idled.

[例句] 她的戴姆勒豪华轿车原地待命，发动机在空转。 Her Daimler limo waits with its engine idling.

[航] the firmament，outer space，aether，firmament ；

[例句] 飞船上的6名宇航员将在太空度过10天。 The six astronauts on board will spend ten days in space.

[例句] 太空望远镜拍摄到了迄今为止最清晰的冥王星的照片。 The space telescope has taken the clearest pictures ever of Pluto.

in the sky，in the air，aerial，overhead，air ；

[例句] 定期航班的数量正让空中交通指挥系统不堪重负。 The volume of scheduled flights is straining the air traffic control system.

[例句] 空中救援行动的规模现在已经有所缩小。 The air rescue operation has now been scaled down.

cavity，cavum ；

[例句] 在第6.11节中节中,将讨论柱形空腔问题. In Section 6 . 11 the cylindrical cavity problem is discussed.

[例句] 两心房是由薄壁构成的空腔. Both atria are thinwalled muscular chambers.

[航空] airspeed，[电影]Airspeed；

[例句] 空速指标, 在空速表上可以调整的指针. AIRSPEED INDEX , An adjustable pointer on the airspeed indicator.

[例句] 您不一定牵涉到维护具体空速在巡航飞行. You're not necessarily concerned with maintaining a specific airspeed in cruise flight.

a vacant or unoccupied seat，void，[固物][物] [半] vacancy，bit bare ；

[例句] 他的去世留下了这个空位. His death has left the void.

[例句] 车里还有我坐的空位 吗 ? Is there room for me in the car?

air battle，aerial combat，air action，aerial engagement，aerial warfare ；

[例句] 联军部队正加大他们的空战强度。 The allies are intensifying their air campaign.

[例句] 欧洲的空战已近白热化. The air war over Europe was reaching its climax.

cavity，void，empty，hollow，inanition ；

[例句] 每年春天，臭氧遭到破坏，空洞就出现了。 Every spring the ozone is chewed up, and the hole appears.

[例句] 亚太经合组织似乎为一大堆空洞的胡言乱语所淹没。 APEC seems be drowning in an ocean of jargon.

open，void，wide，spacious，hollowness ；

[例句] 我开车开了好一阵穿过这片可怕的空旷之地。 I drove for a while across this fearsome emptiness.

[例句] 这附近略显阴冷空旷。 It's a bit chilly and empty hereabouts.