broadcasting system public address system
Someone cranked up the volume of the public address system.
有人调大了公共广播系统的音量。
—— 柯林斯例句DAB is the radio system of the 21st Century.
数字音频广播是21世纪的无线电广播系统。
—— 柯林斯例句Announcements were made over the PA.
通告是从广播系统播出的。
—— 给力词典精选These recordings will probably be used by radio broadcasting systems.
这些录音也许可用于无线电广播系统。
—— 辞典例句Plant public address , Access door controller, and other miscellaneous electrical equipment maintenance.
工厂广播系统, 门禁系统和其他零星电气设备的维护保养。
—— 给力词典精选