closed-circuit television
柯林斯词典
1. N a television system in which signals are transmitted from a television camera to the receivers by cables or telephone links forming a closed circuit, as used in security systems, etc 闭路电视
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closed-circuit television
剑桥词典
- a system that sends television signals to a limited number of screens and is often used in shops as protection against thieves
闭路电视（常设置于商店以防窃贼） 返回 closed-circuit television