loudspeaker

/ˈlaʊdˌspikər/

electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance

中文释义：扬声器；喇叭

The announcement was made over the loudspeaker in the train station.

火车站通过扬声器发布了通知。

The loudspeaker system in the concert hall provides excellent sound quality.

音乐厅的扬声器系统提供了极好的音质。