loudspeaker
['laud'spi:kə]
n.扬声器, 喇叭
例句与用法：
A device for projecting sound waves, as in a loudspeaker.
角状扩音器一种用来产生声波的装置，如扬声器
By the time she had her design thought out, the loudspeaker had broadcast her plan throughout the factory.
等她把设计办法想出来时，大喇叭己经把她的办法向全厂广播了。
A loudspeaker designed to reproduce bass frequencies.
低频扬声器设计用来再现低音频率的扬声器
The police addressed the crowd through a loudspeaker on their car.
警察通过他们汽车上的喇叭向人群喊话。
详细释义：
n.
扬声器, 扩声器, 喇叭[C]
We heard the news over the loudspeaker.
我们听见扩音器里广播了这一消息。