| 词汇 | closed-circuit television |
| 释义 | closed-circuit television noun [ U ] uk/ˌkləʊzd.sɜː.kɪt ˈtel.ɪ.vɪʒ.ən/ us/ˌkloʊzd.sɝːkɪt ˈtel.ə.vɪʒ.ən/ (abbreviation CCTV) 闭路电视（常设置于商店以防窃贼） a system that sends television signals to a limited number of screens and is often used in shops as protection against thieves |
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