motor

汽车的发动机开始发出奇怪的声音。

The car's ___motor started making strange noises.

他们喜欢在周末开车去乡下兜风。

They love to ___motor around the countryside on weekends.

电风扇的电机运转时发出嗡嗡声。

The ___motor in the electric fan makes a humming sound when it runs.