Paying membership fees is an obligation member states of international organizations should fulfill.

缴纳会费是国际组织会员国应尽的义务。

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As the head of the richest sport in the world, with almost 125 million members, Mr Mosley "had an obligation to honour the standards which its vast membership had every right to expect of him", Mr Myler said.

BBC: Mosley wins court case over orgy