单词详解

  n.

扩音器，扬声器，喇叭 (electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance)

I heard the news over the loudspeaker. 我听见扩音器里广播了这一消息。

相关单词

近义词：megaphone

复数 ： loudspeakers