n.管子；管状物；地铁；电视；管状器官
v.提供或装上管子
This tube is flexible but tough. 这管子柔软但很坚固。
I go to work on the tube. 我经常乘地铁去上班。
What's on the tube? 电视上正演什么?
The appendix is a worm-like tube between two and four inches long protruding from the start of the large intestine. 阑尾是一突出于大肠起始端，2-4英寸长的蠕虫样的管状器官。
英式英语中tube可表示“地下铁道,地下电车”; 而在美式英语中则用subway表示。
纳米管
