柯林斯詞典public address system (public address systems) 1. N-COUNT A public address system is a set of electrical equipment which allows someone's voice, or music, to be heard throughout a large building or area. The abbreviation is also used. 播音裝置; 可縮寫爲(wèi)PA 返回 public address system劍橋詞典equipment for making sound louder in a public place 擴(kuò)音器，擴(kuò)音系統(tǒng) 返回 public address system