You may scratch an itch on your arm and kill lots of cells in the process without even thinking about it.

你可能在你的手臂上抓伤一英尺，可能在没想过的情况下已经杀死了很多的细胞。

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Before your holiday, think about what might cause difficulties while you are away and arm yourself with tools and information to help you deal with those problems.

在度假之前，想一想在你离开家里后会遇到什么困难，带上相应的工具准备好充足的信息来处理这些问题。

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'I dare say you're wondering why I don't put my arm round your waist, ' the Duchess said after a pause: 'the reason is, that I'm doubtful about the temper of your flamingo.

“我敢说，你在奇怪我为什么不搂你的腰，”沉寂一会后公爵夫人说，“这个原因是我害怕你的红鹤。

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What does that say about your thinking about ? your fellow citizens when you arm yourselves going for a trip, of his fellow citizens ? when he locks his doors at night or of his children ? and servants when he locks his chests?

你们觉得你的同胞对你,带着武器骑行有什么看法,把门闩起来的时候,对同胞们是什么看法,把箱子锁起来时对自己的子女仆人是什么看法？

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"For very simple things like going from thinking about your arm to actually moving your arm, it's a pretty straightforward system, and we know what the connections are, " Dr. Provencio said.

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But, of course, it wasn't designed to just be fun -- it's about comfort and not keeping your arm or hand still for long periods of time.

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