drone
Definition
A continuous low humming sound; also, a male bee or an unmanned aircraft.
日本語 低い音の連続、または男性の蜂や無人飛行機
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.
日本語 低い音の連続、または男性の蜂や無人飛行機
"The drone of the air conditioner made it hard to concentrate."