Motion-activated
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定义
(a) motion-activated (alarm): 动作感应（警报）
示例
- "If you're wise, you'll equip your home with a top-of-the-range security system. Consider an alarm, motion-activated security lights, and perhaps CCTV cameras."
练习 1
From the list below, select the security options which Floyd recommends to his listeners.
There could be more than one correct answer!
There could be more than one correct answer!
From the list below, select the security options which Floyd recommends to his listeners.
There could be more than one correct answer!
There could be more than one correct answer!
This is a very common means of self protection, but is not talked about on the CD!
Floyd mentions this method. "CCTV" stands for "closed-circuit television" and consists of cameras used to deter thieves. Sometimes the cameras are visible, and sometimes they are hidden! Interesting fact: it is estimated that on a 30 minute walk through London, the average person is filmed 400 times by CCTV!
This is a good choice. Floyd explains that "motion-activated security lights" are an option to consider with home security. These are lights that come on when a detector senses someone's presence. This is a very common way of scaring burglars. Burglars get the impression that there's someone home if a light suddenly comes on.
进一步了解…
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他们的意见 :
您有记住这条规则的妙招吗？关于避免在“Motion-activated”上犯错的小贴士呢？
那就分享给我们吧！
