She wanted him to act as an intermediary in the dispute with Moscow.

她想让他在与莫斯科的争端中担当中间人。

《柯林斯英汉双解大词典》

He refused to act as an intermediary between the two director.

他拒绝充当这两个董事之间的调解人。

youdao

Registry and Repository does not route service requests on its own, nor does it act as an intermediary in the service invocation chain.

Registry and Repository 本身并不路由服务请求，它也不充当服务调用链中的中介。

youdao

However, if I agree that the bank act as an intermediary and lend out the gold, that is a different situation.

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The Vatican has made it clear it is willing to act as an intermediary (or "interpreter" as it likes to call it) between Washington and Havana.

CNN: Cubans hope for spring thaw in Cold War relationship