loudspeaker

名词 loudspeaker:

1. electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
   同义词：speaker, speaker unit, loudspeaker system, speaker system

1. 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
2. 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。
3. 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
4. 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。

loud.speak.er

n.（名词）
A device that converts electric signals to audible sound.
扩音器：把电子信号转变为可听见的声音的一种装置