In strict doctypes, both of these require other block level elements to be inside of them.

在strict文档类型定义里面，要求所有其他的块级元素都在它们里面。

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This includes things like setting the margins on block level elements like paragraphs, headers, and lists to the same value as (or some multiple of) the base line-height setting for the site.

这包括把类似p, header, li等块元素统一(或者部分分类)设置成站点的统一行高。

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If the list item contains block-level elements, then everything up to the first block is placed in the command; after that, any non-list items are placed in an wrapper.

如果列表项包含块级别元素，则将第一个块之前的全部内容都放入命令中，此后的所有非列表项都放在包装器中。

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