| 单词 | closed-circuit television |
| 释义 | closed-circuit televisionBrE /ˌkləʊzd ˌsɜːkɪt ˈtelɪvɪʒn/ NAmE /ˌkloʊzd ˌsɜːrkɪt ˈtelɪvɪʒn/ noun [U ] (abbreviation CCTV ) a television system that works within a limited area , for example a public building , to protect it from crime 闭路电视 |
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