loudspeaker system

扬声器系统

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。