广播系统 guǎngbōxìtǒng public address system Origin Definitions Defs Strokes Stroke Words Sentences Sents 广播 廣播 guǎngbō noun to broadcast to transmit audio or video signals via radio or television系统 系統 xìtǒng noun system A whole composed of parts that work together to perform a function or achieve a goal; a series or group of related things forming a complex whole.