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1. The closed-circuit TV camera captured the entire scene.
闭路电视摄像头捕捉到了整个场景。
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2. The security camera was installed in the lobby to monitor the entrance.
安全摄像头安装在大厅里，用于监控入口。
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3. The closed-circuit TV camera was used to record the meeting.
闭路电视摄像头被用来录制会议。