Public address system
01
公共广播系统, 扩音系统
an electronic amplification system used to broadcast sound to a large audience in public spaces
语法信息
有生性状态
无生命
形态构成
复合词
可数
singular
not gender specific
复数形式
public address systems
例子
The school used the public address system to announce the upcoming field trip.
学校使用扩音系统来宣布即将到来的实地考察旅行。



























