这些永久存储分页没有经过修改，这意味着并没有在内存中对这些分页进行修改。
These permanent storage pages are unmodified, meaning that the pages have not been modified in memory.
如前所述，可以直接释放没有经过修改的永久存储分页，无需将其写入到文件系统中，因为文件系统包含该数据的原始副本。
As mentioned earlier, an unmodified permanent storage page can just be released without being written to the file system, since the file system contains a pristine copy of the data.
如果该分页没有经过修改，那么分页替换守护进程可以简单地将物理内存块标记为空闲，这样一来，就可以将该物理内存块重用于另一个分页。
If the page is unmodified, the page replacement daemon can simply mark the physical memory block as free, and the physical memory block can then be re-used for another page.
同样，很难想象一个这样的系统：不管是好是坏，都没有经过人类文化的实质性修改。
It is also true that it is difficult to think of a single such system that has not, for better or worse, been substantially modified by human culture.
在另一方面，没有经过相应测试的代码更难于理解和安全地修改。
On the flipside, code without corresponding tests can be more challenging to understand and is harder to modify safely.
在过去的十个交易日里对于银行股的抛售行为在财政部宣布了经过修改过的银行救助计划之后又被市场重新拾起，有批评认为该份计划没有提供足够的必要的细节。
The selling in the bank sector has picked up in the last 10 days since Treasury announced a revamped bank bailout plan that critics say provides few essential details.
在这张渲染图中，Maxwell博士并没有被赋予贴图，直到这个场景经过更多的脸部测试让我们基本确定了一些修改。
In this rendering, Dr. Maxwell does not have any texture since this scene is little more than the evolution of a facial test that we liked and decided to embellish a little.
在这张渲染图中，Maxwell博士并没有被赋予贴图，直到这个场景经过更多的脸部测试让我们基本确定了一些修改。
In this rendering, Dr. Maxwell does not have any texture since this scene is little more than the evolution of a facial test that we liked and decided to embellish a little.
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