尽管子项列表和属性列表的操作方式相似，但一个可以包含重复项(对象的子项)，而一个不能(元素对象的属性)。

While the list of children and the list of attributes operate similarly, one can contain duplicates (the children of an object) and one cannot (the attributes of an element object).

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例如，所有用于定义列表的元素和属性类型都位于一个模块中，而面向表示的元素类型将位于另一个模块中。

For example, all element and attribute types used for defining lists would be in one module, and element types geared toward presentation would be in another module.

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您可以在相同的逗号分隔的列表中添加属性和主体。

You can add attributes and body in the same comma-delimited list.

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