public address system
短语扩音系统, 有线广播系统 [电] 播讲系统
词形变化
public address systems
复数
public address systems
别名
p.a.
释义与例句
n.
-
1.
An electronic voice-amplification apparatus, usually containing a set of two loudspeakers and a central control unit, used for singing, giving a speech, play-by-play commentary at events, or broadcasting in public areas like in airports or stations.