词典释义：
a long, hollow cylinder of metal, plastic, glass, etc. for holding or transporting something, chiefly liquids or gases
（金属、塑料、玻璃等材料制的）管，管子
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a plastic tube is connected to the tap and the beer is ready to be pulled. 笼头上接了根塑料管子，这样啤酒就可以随时汲取出来了。
the inner tube of a bicycle tyre
自行车内胎。
[mass noun]material in such a cylindrical form; tubing
管料；管形材料
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the firm manufactures steel tube for a wide variety of applications. 这家工厂生产满足多种需求的钢管。
a thing in the form of or resembling such a cylinder, in particular
管状物，尤指：
a flexible metal or plastic container sealed at one end and having a screw cap at the other, for holding a semi-liquid substance ready for use
（一头密封，一头有螺旋盖，装半流质的）软金属管，塑料管
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a tube of toothpaste. 一管牙膏。
a rigid cylindrical container
圆柱形硬管
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a tube of Smarties. 一瓶聪明豆（糖果）。
〈澳， 非正式〉 一听啤酒
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a tube of lager. 一听贮陈啤酒。
[usu. with adj. or noun modifier]
【剖，动，植】 管状器官，管（如咽鼓管、筛管）。
(
〈非正式〉 输卵管
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women with blocked tubes. 输卵管阻塞的妇女。
a woman's close-fitting garment, typically without darts or other tailoring and made from a single piece of knitted or elasticated fabric
紧身女衣
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[as modifier]
stretchy tube skirts. 弹性紧身筒裙。
(in surfing)the hollow curve under the crest of a breaking wave
（冲浪用语）（散浪头下的）空心浪。
〈非正式〉 香烟。
〈英， 非正式〉 伦敦地铁
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it wasn't far from where he lived, just a stop further on the tube. 那离他住的地方不远，多坐一站地铁就到了。
a train running on this system
地铁列车
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I caught the tube home. 我搭地铁回家了。
a sealed container, typically of glass and either evacuated or filled with gas, containing two electrodes between which an electric current can be made to flow
电子管，真空管（尤指真空或充气的玻璃管，内含两个电极，其间可有电流通过）。
a cathode ray tube, especially in a television set
阴极射线管，电视显像管。
(
〈北 美，非正式〉 电视
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watching the tube in a country bar. 在一家乡村酒吧看电视。
〈北美〉 热离子管。
[usu. as adj.
给…装上管子
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[in combination]
a giant eight-tubed hookah. 巨型八管水烟筒。
〈非正式〉 （给做过喉剖开术的人或动物）插管（以助呼吸）。
[with adverbial]convey in a tube
用管道运输。
〈英，非正式〉乘地铁
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we tubed it back to Queensway 我们坐地铁回到女王道
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[no obj.]
I tubed to St Pancras. 我乘地铁去的圣潘克拉斯。
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go down the tube （或tubes ）informal be completely lost or wasted; fail utterly 〈非正式〉 一败涂地，完全失败the country is going slowly and surely down the tubes. 这个国家正缓慢而不可挽回地走向绝境
"mid 17th cent.： from French
