closed-circuit television
复数形式
closed-circuit televisions
1
闭路电视, 监控系统
a system in which a number of cameras send their feed to television sets to protect a place and its occupants from crime
Closed-circuit television (CCTV) is a system of video cameras used to monitor and record specific areas for security and surveillance purposes. Unlike broadcast television, CCTV transmits video signals to a limited set of monitors, usually within the same building or network, allowing only authorized viewers to see the footage. CCTV is commonly used in places like businesses, public spaces, and homes to deter crime, monitor activities, and enhance safety by providing real-time observation and recording of events.
- The bank installed closed-circuit television cameras to monitor all transactions and enhance security.
银行安装了闭路电视摄像头来监控所有交易并增强安全性。
- The closed-circuit television system captured clear footage of the intruder breaking into the store.
闭路电视系统捕捉到了闯入商店的入侵者的清晰画面。
- Hospitals use closed-circuit television to keep an eye on critical areas and ensure patient safety.
医院使用闭路电视来监视关键区域并确保患者安全。
- The office building upgraded its closed-circuit television network to cover all entrances and hallways.
办公楼升级了其闭路电视网络，以覆盖所有入口和走廊。
- During the event, security personnel monitored the crowd using closed-circuit television feeds.
活动期间，安保人员使用闭路电视监控人群。