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.
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
Whirr is also a noun.
He could hear the whirr of a vacuum cleaner... 他能听到真空吸尘器的嗡嗡声。
Whirr, click, whirr, click — step by step the scan probed deeper. 嗡嗡,咔嗒,嗡嗡,咔嗒——扫描探查一步步地深入。