tube

/tub/

conduit consisting of a long hollow object (usually cylindrical) used to hold and conduct objects or liquids or gases

中文释义：管；管子；地铁

The laboratory uses a thin glass tube to transfer small amounts of liquid.

实验室用一根细玻璃管来转移少量液体。

In London, many commuters travel by tube to avoid traffic jams.

在伦敦，许多通勤者乘坐地铁以避免交通堵塞。