CCTV

剑桥词典

abbreviation for closed-circuit television : a system that sends television signals to a limited number of screens , and is often used in shops and public places to prevent crime
閉路電眡（closed-circuit television的縮寫）
CCTV cameras 閉路電眡攝像機
The whole incident was captured on CCTV. 整個事件被閉路電眡攝像機拍攝了下來。 返回 CCTV