VMM also maintains what is referred to as a free list, which is defined as unallocated page frames.

VMM还维护一个称为空闲列表的对象，该对象定义为未分配的页帧。

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At the same time, VMM maintains a free list of unallocated page frames, which are used to satisfy page faults.

同时，VMM维护了一个未分配页帧的空闲列表，可以使用该列表来处理缺页的问题。

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Below you'll find a list of summer reading programmes this year that will offer you free things like books, gift cards and more.

下面你会发现今年暑期阅读项目的清单，它会为你提供免费的东西，如书籍、礼品卡等。

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David Baum, owner of The Golf Vacation Insider, has painstakingly compiled a free list of the best charity auctions for getting onto top courses.

FORBES: Olympic Club? Winged Foot? Riviera? Yes You Can Play Golf's Best Private Courses!

For a list of free titles, go to the Rocket Library.

CNN: Top 10 free e-books

Many would also put a free press on that list - and what the World Bank euphemistically calls "higher public participation in public policy formulation".

BBC: China: Does it have to become more like us?