tube
/tju:b; ?@ tu:b; tub/ n
1 [C] long hollow cylinder of metal, glass, rubber, etc for holding or conveying liquids, gases, etc （金属、 玻璃、 橡胶等材料的）管, 管子, 筒子
laboratory test-tubes 实验室的试管
an inner tube, eg of a bicycle or car tyre 内胎
Blood flowed along the tube into the bottle. 血液沿管子流入瓶中.
2 [C] ~ (of sth) container made of thin flexible metal or plastic with a screw cap, used for holding pastes, etc ready for use （金属或塑料的）软管（有螺旋盖, 盛膏装物用的）
tubes of glue, mayonnaise 管装的胶水、 蛋黄酱
squeeze toothpaste from/out of a tube 挤出管子里的牙膏.
3 the tube(also the underground) [U, sing]
(Brit infml 口) the underground railway system in London 伦敦的地下铁道
travel to work by tube/on the tube 乘伦敦地铁上班
take a/the tube to Victoria 乘地铁到维多利亚站
[attrib 作定语]
tube trains, tickets, etc 地铁列车、 车票等. Cf 参看 subway.
4 [C] = cathode ray tube (cathode).
5 [C usu pl 通常作复数]
hollow tube-shaped organ in the body （身体内的）管状器官
bronchial, Fallopian, Eustachian tubes 支气管、 输卵管、 耳咽管.