repeater system的用法和樣例：
例句
- The public address system in the hospital was used for paging.
醫院裡的擴音系統用來呼叫人名。 - When she played a recording of "play panting" through the speaker system at a shelter in Spokane Valley, all the barking dogs quieted within a minute.
在華盛頓斯波坎縣一間狗舍，當她通過擴音系統播放之前錄下的狗狗們的的喘息聲時，所有正在吠叫的狗都在幾分鐘之內安靜了下來。
