closed circuit television system cctv
closed circuit television system cctv
闭路电视系统CCTV
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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By the end of 1997, 308 signalised junctions on Hong Kong Island were under the ATC system and 40 closed circuit television (CCTV) cameras were in use for traffic surveillance.
年底时，港岛区有308个路口由区域交通控制系统控制，并有40部闭路电视摄影机，用以监察交通情况。
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