[医] empty stomach，limosis ；

[例句] 不要空腹饮酒。 Avoid drinking on an empty stomach.

[例句] 47与其负债起床,不如空腹睡觉. 47 Better go to bed supperless than rise in debt.

disengaged，free，void，idle，off ；

[例句] 我在上大学前空闲的一年里周游了世界。 I went around the world in my gap year.

[例句] 照顾孩子于她是一件不得空闲的苦差事。 The way she did it, mothering was a full-time job.

[体] karate ；

[例句] 辛格尔顿是个牛皮大王，他自称有一条空手道黑带。 Singleton was a fantasist who claimed to have a karate blackbelt.

[例句] 一位空手道高手将一名男子毒打致死。 A karate expert battered a man to death.

blank，empty，[法] vacant，flatulent，inane ；

[例句] 他不想过一种空虚的生活. He didn't want to live an empty life.

[例句] 人类只是在 “ 空虚的永恒中孤独地流浪着 ”. Humanity is left " wandering forlorn among the empty eternities ".

evacuation，drain ；

[例句] 通过管道把废蒸汽排空。 Exhaust vaporous wastes through a pipe.

[例句] 用这种方式治疗输尿管下部结石其结石排空率为93.3%. Lower ureteral calculi found a stone - free rate of 93.3 % with one treatment.

ideal，fantastic，aerial，airy-fairy，chimerical ；

[例句] 他的乌托邦不是空想的联邦,而是对那些已经存在的联邦事实上的改进. His Utopia is not a chimerical commonwealth but a practical improvement on what already exists.

[例句] 它在这两种场合都是反动的,同时又是空想的. In either case, it is both reactionary and Utopian.

leave a blank space ，blank space，blank ；

[例句] 这个词占(打字机)三个 空格. The word " the " takes three spaces . " the "

[例句] 消去同一行上字符间空格使字符互相靠拢的动作. The action of bringing together type matter by taking out spaces.

theoretician，dreamer，visionary，daydreamer，fancier ；

[例句] 罗伯逊是位实干家，不是空想家。 Robertson was a doer, not a thinker.

[例句] 在我们看来,空想家的观念好像不切实际. The ideas of a visionary may seem impractical to us.

[书] forced，farfetched ；

[例句] 有人把一大块石头给凿空了。 Someone had hollowed out a large block of stone.

[例句] 司马迁把这一历史性的壮举形象地描绘为“凿空”. Sima Qian visualized this feat as blazing the path into the west regions.

empty，hollow，[计] nulla，unfruitful，bare ；

[例句] 除非我们到来，要不然那间小木屋一直都是空的。 The log cabin stayed empty, except when we came.

[例句] 空的物体会在水中浮起。 Empty things float.

empty，hollow，[医] cavernous，cavitary，barren ；

[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.

[例句] 他发出低沉空洞的笑声. He gave a hollow laugh.

[物] (positive) hole，hole carrier；

come to naught，all in vain，futile ；

[例句] 他组织了一场空前盛大的莫扎特作品演奏会。 He staged the most lavish productions of Mozart.

[例句] 到头来, 竹篮打水一场空. Finally, it is like drawing water with a sieve.

break out，empty，emptying，exinanition ；

[例句] 她把他们俩的杯子倒空，烧上了电水壶。 She emptied both their mugs and switched on the electric kettle.

[例句] 我把烟灰缸倒空了。 I emptied the ashtray.

vacant，[电影]3-Iron；

[例句] 在二楼有几个空房间. There are a few vacancies on the second floor.

[例句] 锁坏了使我很容易进入空房间. The broken lock facilitated my entrance into the empty room.

aerial，airy，pneumatic，atmospherical ；

[例句] 新鲜空气的康复功效 the restorative power of fresh air

[例句] 飞机须克服空气的阻力. An aircraft has to overcome the resistance of the air.

airborne，skyborne，[经] air borne ；

[例句] 我们有能力扩大空运的规模,同苏联的任何升级行动相匹敌. We had the capacity to expand the scale of the airlift to match any Soviet escalation.

[例句] 不, 空运的运费太贵了. 它们可以用船运. No, air freight's too expensive. They can go by sea.

dimensional，spatial，steric，spacial ；

[例句] 来自外层空间的无线电波 radio waves from outer space

[例句] 他向她俯过身去，这种侵犯她个人空间的举动让她绷紧了身子。 He leaned towards her and she stiffened at this invasion of her personal space.

blank page；

[例句] 戈尔巴乔夫不断地坚持必须填写苏联历史的空白页. Gorbachev's repeated insistence that the " blank pages " of Soviet history must be filled in.

[例句] 该选项控制在输出PDF文档 时是否输出空白页. This option controls whether to export that blank page.

[化] air chamber，wind box ；

[例句] 此时, 助力器的真空气室 、 应用气室被隔开. At this point, the real booster air chamber, the application chamber was separated.

[例句] 底部特配有托盘保护玻璃真空气室,防止其磨损. The tray at the bottom of the manifold can prevent glass chamber fraying.