drone
Definition
A continuous low humming sound; also, a male bee or an unmanned aircraft.
中文 持续的低沉嗡嗡声;雄蜂或无人飞行器。
Example
"The drone of the air conditioner made it hard to concentrate."
A continuous low humming sound; also, a male bee or an unmanned aircraft.
中文 持续的低沉嗡嗡声;雄蜂或无人飞行器。
"The drone of the air conditioner made it hard to concentrate."