closed-circuit television造句

1、There's a closed-circuit television camera in the reception area.
接待处有一台闭路电视摄像机。

2、Researchers observed the children via closed-circuit television and recorded their activities.
研究者通过闭路电视观察孩子们的行为。

3、On a typical day in a big city you may be filmed by hundreds of closed-circuit television cameras.
在一所大城市里的一天，你可能已被闭路电视（CCTV）摄像头记录了上千次。

closed-circuit television翻译