“你看得很清楚，”狮子说，“瀑布就是纳尼亚的边界，一旦你到了峭壁上，就出了纳尼亚，进入西方原始区了。

"You see well, " said the Lion. "Now the land of Narnia ends where the waterfall comes down, and once you have reached the top of the cliffs you will be out of Narnia and into the Western Wild.

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从受损区到更原始流区的基因流的数量急剧增加，导致了大量的基因流动，进而降低了后代的总体适应性。

Such a dramatic increase in straying from damaged areas to more pristine streams results in substantial gene flow, which can in turn lower the overall fitness of subsequent generations.

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不过，如果正在覆盖某一部分文件，而此时系统崩溃，那么有可能所写的区将包含原始块和在其中散布了更新块的组合。

However, if part of a file is being overwritten and the system crashes, it's possible that the region being written will contain a combination of original blocks interspersed with updated blocks.

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