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单词 surveillance system
释义
Surveillance System
nnoun.artifacta closed-circuit television system used to maintain close observation of a person or group
Hypernyms:closed-circuit television
Inherited Hypernyms:surveillance systemclosed-circuit televisiontelevisiontelecommunication systemcommunication systemsysteminstrumentalityartifactwholeobjectphysical entityentity
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更新时间:2025/2/23 12:43:05