柯林斯詞典closed-circuit television 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 閉路電視 返回 closed-circuit television劍橋詞典a system that sends television signals to a limited number of screens and is often used in shops as protection against thieves 閉路電視（常設(shè)置于商店以防竊賊） 返回 closed-circuit television