The most common example is a document that lacks well-formedness.
最常见的例子是缺乏良好格式的文档。
The grammatical meaning of a sentence refers to its grammaticality, that is its grammatical well-formedness.
句子的语法意义指的是它的语法性,即语法合法性。
It assumes that you are familiar with concepts such as well-formedness and the tag-like nature of an XML document.
这里假设读者熟悉诸如格式良好和 XML 文档的类标签性质等概念。
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