Humming
01
嗡嗡声, 低鸣
a low and continuous sound
例子
The soft humming of the computer servers indicated their smooth operation in the data center.
计算机服务器轻柔的嗡嗡声表明它们在数据中心运行顺利。
As the car engine idled, a reassuring humming sound filled the quiet street.
当汽车发动机空转时，一种令人安心的嗡嗡声充满了安静的街道。
02
哼唱, 嗡嗡声
the act of singing with closed lips
