VERB
(机器、昆虫翅膀等)发出呼呼声，嗡嗡作响
When something such as a machine or an insect's wing whirrs, it makes a series of low sounds so quickly that they seem like one continuous sound.
例句
The camera whirred and clicked.
相机发出嗡嗡声和咔嚓声。
...the whirring sound of the film projector.
电影放映机的嗡嗡声