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tube PIPEtjU:bn [C]a long hollow cylinder made from plastic, metal, rubber or glass, esp. used for moving or containing liquids or gases（由塑料、金属、橡胶、玻璃等制成的）管，管子Gases produced in the reaction pass through this tube and can then be collected.反应中产生的气体通过这个管子, 然后就可以收集起来。In biology, a tube is any hollow cylindrical structure in the body that carries air or liquid.管状器官，管道the bronchial tubes支气管(infml) If a woman has her tubes tied, she has a medical operation in which her FALLOPIAN TUBES are closed to stop her eggs being released so that she cannot become pregnant.(输卵管)结扎(Aus infml) A tube is also a CAN (= small metal container) or bottle of beer.一瓶（或一罐）啤酒a tube of lager一瓶淡啤酒(infml) If something goes down the tubes, it fails completely.彻底完蛋，失败If business doesn't pick up soon, the company will go down the tubes.如果业务不很快有起色的话, 公司将会彻底完蛋。
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