监控摄像头

Perched on top of the fencing is a network of 900 surveillance cameras to detect intrusions.

围栏顶部是一个由900个监控摄像头组成的网络，用来探测入侵。

The security cameras and alarm system were alerted and the police immediately came to the house and arrested the intruder who was attempting to break a window when they arrived.

监控摄像头和保安系统立刻发出警报，警方立刻赶到现场，逮捕了这一试图通过打破窗户进入家中的男子。

In the event a crime was committed, surveillance cameras would have collected footage. But the best option would have been to call a friend or the school´s security department.

虽然，一旦有犯罪行为发生，监控摄像头会留下录像，但是及时给朋友或者学校保卫处打电话仍是上上策。

Police are barred by city ordinance from installing surveillance cameras that are commonly found in other cities, a restriction that even Mr. Wiener said he did not want changed.

按照旧金山的城市法规，警察不能安装监控摄像头——安装摄像头在其他城市很常见。不过，甚至连威纳也不想改变这一限制规定。

Above the man´s head we see surveillance cameras. What we don´t see are the very small surveillance cameras now obtainable, or the increasingly sophisticated software for identifying individuals.

我们在这个人的头顶上方看到了监控摄像头，而我们看不到的则是那些如今已经问世的微型摄像头，或是那些为识别人的身份而日益复杂的软件。