The advantage here is the ability to perform set operations on keys and items without having to copy them.

这样做的优点是，可以直接在键和条目上进行集合操作，而不需要再复制一次。

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That's because servers need to be able to use keys in an automated fashion, without user intervention.

这是因为服务器需要能够以自动方式使用密钥，而不需要用户介入。

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Brain-based control of conventional keyboards, allowing individuals to type without physically touching the keys, has been demonstrated at the universities of Wisconsin and Michigan.

威斯康星州和密歇根州大学已经证明，以大脑为基础的常规键盘控制技术，可以让人在不接触键盘情况下打字。

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"This is partly because newer cars are more difficult to steal without the keys, " he said.

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The second reason is that lenders signed especially generous contracts with hotel owners and operators, which in many cases allow them to throw in the keys without the banks having recourse to their other assets.

ECONOMIST: Hotel owners and operators have their banks over a barrel

And lastly, Pointing lets users make on-screen selections quickly and easily without having to scroll or push direction keys repeatedly.

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