tube

tube

名词 tube:

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

同义词：tubing

electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope

同义词：vacuum tube, thermionic vacuum tube, thermionic tube, electron tube, thermionic valve

a hollow cylindrical shape

同义词：pipe

(anatomy) any hollow cylindrical body structure

同义词：tube-shaped structure

an electric railway operating below the surface of the ground (usually in a city)

同义词：metro, underground, subway system, subway

动词 tube:

provide with a tube or insert a tube into

convey in a tube

ride or float on an inflated tube

place or enclose in a tube