n. 1.管，筒；颜料管。 2.管状地下隧道；〔口语〕(伦敦的)地下铁道。 3.【炮】炮身；【汽锅】锅管；【解剖学】管；管乐器；轮胎内胎。 4.〔美国〕真空管，电子管；电视映像管；电视(机)。 短语和例子 an optic tube 望远镜。 a wheel [an inner] tube 内轮胎。 a photoelectric tube 光电管。 a display tube (雷达)显示管；(电视)显像管。 a pick-up [picture] tube 摄像[显像]管。 a pilot tube 指示灯。 go by tube 〔口语〕坐(伦敦)地下铁道车去。 vt. 1.把…装上管；把…弄成管状。 2.使通过管子；〔英国〕坐地下铁道车去。
an electric railway operating below the surface of the ground (usually in a city); "in Paris the subway system is called the `metro'' and in London it is called the `tube'' or the `underground''" 同义词：metro, underground, subway system, subway,
conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases 同义词：tubing,
electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope 同义词：vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve,
(anatomy) any hollow cylindrical body structure 同义词：tube-shaped structure,
a hollow cylindrical shape 同义词：pipe,
place or enclose in a tube
ride or float on an inflated tube; "We tubed down the river on a hot summer day"
convey in a tube; "inside Paris, they used to tube mail"
provide with a tube or insert a tube into
例句与用法
1.
Sperms fertilize ova in the fallopian tube . 在输卵管内精子使卵受精。
2.
He silently applied the tube to his lips . 他默默地把烟管递到嘴里。
3.
The detector tube is filled with nitric oxide . 检测管中充满了氧化氮。
4.
They suck soda water through straws tube . 他们用（麦秆状）吸管喝汽水。
5.
Sample gas tubes are flushed with nitrogen . 采气管得用氮气吹扫。
6.
No vacuum or picture tubes were broken . 真空管或显影管都未破碎。
7.
The captain's voice blared in the tube . 艇长在传话筒里大声吼叫。
8.
The interior of the tube is highly evacuated . 管内被抽成高真空。
9.
The patency of the eustachian tube is compromised . 咽鼓管的通畅被损害。
10.
Be sure clothes do not cover the tube opening . 注意不要让衣服盖住管口。
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