a television system or installation, used esp for surveillance in which the signals are transmitted by wire from one or more cameras to a limited number of receivers, usu in one location
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| 单词 | closed-circuit television |
| 释义 | closed-circuit televisionnouna television system or installation, used esp for surveillance in which the signals are transmitted by wire from one or more cameras to a limited number of receivers, usu in one location |
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