Play freely with the problem statement, rewording it several times. For a methodical approach, take single words and substitute variations.

对问题称述上自由发挥，重新改变几次语言。要有条不紊地进行，那么采用一个个单个词，替换变量。

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A challenging problem of constructing Virtual Organization (VO) ontology is how to deal with the problem of member ontologies variations.

如何应对虚拟组织成员本体的变更问题是构建虚拟组织本体面临的主要挑战。

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