trolley pole

短语

词形变化

trolley poles 复数 trolley poles

释义与例句

n.
  1. 1.

    A pole of wood or metal, used to transfer electricity from an overhead wire to power a tram, streetcar or trolley bus.

词源

A trolley wheel (a wheel that trolls along a wire) at the end of a pole.

来源：wiktionary