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closed-circuit
(also closed circuit)
ADJ [ADJ n] (电视或录像系统)闭路的 A closed-circuit television or video system is one that operates within a limited area such as a building. (电视或录像系统)闭路的
  • There's a closed-circuit television camera in the reception area.

    接待处有一个闭路电视摄像头。


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