| 释义 |
public address systemBrE /ˌpʌblɪk əˈdres sɪstəm/NAmE /ˌpʌblɪk əˈdres sɪstəm/ noun (abbreviation PA system, PA) an electronic system that uses microphones and loudspeakers to make music, voices, etc. louder so that they can be heard by everyone in a particular place or building 广播系统 |