他们每天要处理数十亿的搜索，现在通过每一次击键他们可处理数十亿单独的小搜索。

They were already handling billions of searches a day, now they are handling billions of individual small searches with each keystroke.

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当然，有些击键序列可能就是一次击键。

Of course, some key sequences can be a single keystroke.

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如果另外一次击键在计时器停止之前，则原来的计时器将被取消，同时创建一个新的计时器。

If another key stroke comes in before the timer goes off, the original timer is canceled and a new timer is created.

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