public address receiver

例句：

1. 1.The public address receiver was faulty and caused the speakers to be unable to hear each other clearly.
   公共地址接收器有故障，导致扬声器无法清晰地听到彼此的声音。
2. 2.The engineers had to replace the public address receiver in the conference room.
   工程师们不得不更换会议室的公共地址接收器。
3. 3.The public address receiver was a critical component of the new audio system.
   公共地址接收器是新音频系统的关键组成部分。