whir /wɜː/ (also whirr) ( whirring, whirred, whirs )

• 1. 

  V-I When something such as a machine or an insect's wing whirs, it makes a series of low sounds so quickly that they seem like one continuous sound. 发出嗡嗡声

  例：

  The camera whirred and clicked.

  相机发出嗡嗡声和喀嚓声。

• 2. 

  N-COUNT/SOUND Whir is also a noun. 嗡嗡声

  例：

  He could hear the whir of a vacuum cleaner.

  他能听到吸尘器的嗡嗡声。