public-address system編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看public-address systempublic-address system — 名詞名詞1. a system of microphones and speakers for amplifying sound to a large audience1.名詞釋義擴音系統a system of microphones and speakers for amplifying sound to a large audience例句The school installed a new public-address system for announcements.