But at the time of this writing, this is a system-wide setting that, for any practical system, is set such that the root user is always all-powerful by default.
但是到编写本文时，在任何实际系统上，这还是一个系统范围的设置，它的默认设置让根用户总是拥有所有能力。
The root of all this is the traditional mechanism of writing teaching.
问题的根源就在于传统的写作教学机制。
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