慢速英语:Robot Security Could Help Cut Crime

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短语讲解：

1. He says the machines have to be used in the right way.

be used in 被用于
例句：A telescopic device is used in conjunction with the prism.
棱镜与望远镜配合使用。

2. He says some people may become concerned about their privacy, especially in connection with the video recordings.

concern about 使（自己）关心…
例句：Public concern about environmental pollution is mounting.
公众对环境污染的担忧在不断加剧。

3. Mr. Volokh says it will be interesting to see how state laws deal with this kind of surveillance video.

deal with 应付;对待;惠顾
例句：I have a huge pile of letters to deal with.
我有一大堆信件要处理。

4. At least 25 other countries are also intered in these robotic security guards.

at least 至少
例句：In fact it requires at least n generators.
事实上，它至少要有n个元素。