sur·veil·lance 
(sər-vāləns)
(sər-vāləns)n.
1. Close observation of a person or group, especially one under suspicion.
2. The act of observing or the condition of being observed.
| 单词 | surveillance |
| 释义 | sur·veil·lance (sər-vāləns)n. 1. Close observation of a person or group, especially one under suspicion. 2. The act of observing or the condition of being observed. |
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