遗留系统往往有复杂的结构，用户手册和系统设计文件过时、不准确，对现有系统已经不能提供有效支持。
User manuals and system design documents are out of date and inaccurate, which are unable to provide effective support for existing systems.
正如您所见，绑定安装非常强大，让您可以轻易地修改文件系统设计，丝毫不必忙乱。
As you can see, bind mounts are extremely powerful and make it easy to make modifications to your filesystem layout without any fuss.
上一期文章中还讨论了我计划如何改进现有的设计，以便从文件系统中抽象出XM。
In my previous article, I also discusses how I plan to evolve the existing design to abstract XM from the file system.
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