一旦你创建了一个构件，就不能将其重新组织为子组件。

Once you create a component, you cannot reorganize it into sub-components.

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检索项目类型的子组件。

Retrieve the child components of the Item Type.

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规则是策略中最重要的子组件。

Rules are probably the most important subcomponent of a policy.

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