whir
US /wɝː/
UK /wɜːr/
动词
呼呼
(especially of machines) to make a low, soft, continuous sound:
示例:
•
I could hear the washing machine whirring in the kitchen.
名词
呼呼
the sound or act of a machine making a low, soft, continuous sound:
示例:
•
the whir of machinery