扩声器的英文：
loudspeaker

The loudspeaker seemed to distort his voice.
他的声音从喇叭里传出来好像失真了。

Martial music thundered from loudspeakers.
扩音机里传出雄壮响亮的军乐。

A partition that prevents interference between sound waves in a loudspeaker.
隔音板在扩音器中防止声波相互干扰的隔离装置。

To distort sound recording or transmission by overloading a microphone or loudspeaker.
声音失真由于麦克风或扬声器负载过重而使得声音记录或传送失真

The loudspeaker announced each airplane as it landed at the airport.
每架飞机在机场降落时，扩音器就报航班到达。