分层配置是指那些包含了复杂结构条目的配置。

Layered configurations are those that have items with a complex structure.

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例如，可以用一个XML数据结构表示复杂条目的细节，然后将XML数据结构序列化成字符串。

The details of the complex item could, for example, be represented with an XML data structure and subsequently serialized into a string.

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它是一种形态，它之所以是一种形态，是因为我们可以看到它外在的形状，以及它复杂的结构，这就是“合目的性。”

It is a form. It is a form and that form, because we can see it has structure and because we can see it has organization and complexity, is purposive.

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It is a form. It is a form and that form, because we can see it has structure and because we can see it has organization and complexity, is purposive.

它是一种形态，它之所以是一种形态，是因为我们可以看到它外在的形状,以及它复杂的结构，这就是“合目的性“

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