请保留一个套房。
您可能希望为一个文件系统保留多个快照，但请记住，这将消耗原始文件系统的空间，而且多个快照需要管理。
You may like to keep several snapshots of a file system, but just keep in mind that this will eat into the space of the original file system and will need to be managed.
主要问题在于它们目前只实现了一个很窄的最佳观看位置——你不能在任何一方移动太远而导致不能保留图像而导致最好的情况下也会图像模糊或在最坏的情况下令人头晕作呕(本句请大侠指正……)。
The chief problem: They tend to have a very narrow viewing sweet spot-you can't shift too far to either side without being left with an image that's blurry at best and nauseating at worst.
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