The OS can move data held in physical memory to and from a swap area when it isn't being used, to make the best use of physical memory.

操作系统可以将物理内存中的数据移动到未使用的交换区，以便于最充分地利用物理内存。

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Members then browse available cars located in their area, arrange a key swap, and off you go.

会员们挑选他们片区的可租车辆，交换钥匙然后就可以出发了。

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For example, let's say that one area of memory is currently in swap space while another one is in memory.

例如，假设一个内存区当前在交换空间中，而另一个在内存中。

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Uribe announces "meeting area" for humanitarian swap.

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They swap deal ideas, and have panels on topics like investing in the New York City area, or the outlook for social gaming.

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He proposes a grand bargain: swap Britain's veto over European integration for the right to opt out of any EU policy area.

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