The reasoning behind this is that unqualified elements are similar to attributes, which are unqualified by default.
背后的推论是非限定的元素类似于属性，因为属性在默认情况下是非限定的。
The reasoning behind this is that unqualified elements are similar to attributes, which are unqualified by default.
背后的推论是非限定的元素类似于属性，因为属性在默认情况下是非限定的。
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