Element defaults can only be character data (not containing markup).

元素缺省值只能是字符数据(不包含标记)。

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The HTML element specifies that the browser should not wrap lines, regardless of how much content is contained inside the element. For example, take the following HTML markup

HTML 元素指出：无论 元素中包含多少内容，浏览器都不应换行。

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The problem is that inline markup is treated as a child element, which is technically true, but it does not let you determine the relations between PCDATA nodes and child element nodes.

问题在于将内联标记作为子元素处理，技术上讲这样是对的，但这样却使您不能决定PC DATA节点和子元素节点之间的关系了。

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