实际上，在最高的集成层次上，它们可以成为业务范围的数据仓库。

In fact, at the highest level of integration, they can become a business-wide data warehouse.

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范围必须构成一个层次结构。

Scopes must form a hierarchy.

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范围必须构成一个层次结构。

Scopes must form a hierarchy.

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