buzz

The refrigerator started to buzz loudly, indicating that the motor might be failing.

(Chinese) 冰箱开始发出巨大的嗡嗡声，表明电机可能出故障了。

I could hear a fly buzzing around my head while I was trying to sleep.

(Chinese) 当我试图睡觉时，我能听到一只苍蝇在我头边嗡嗡作响。

There was a constant buzz of excitement in the stadium before the concert started.

(Chinese) 音乐会开始前，体育场内一直回荡着兴奋的嘈杂声。

I couldn't hear my friend's voice over the buzz of conversation in the crowded cafe.

(Chinese) 在拥挤的咖啡馆里，聊天声此起彼伏，我听不清朋友的声音。