But Iran's response to Brazil's offer to serve as a neutral repository for Iran's stocks of enriched fuel as part of an attempt to revive a mooted solution to the nuclear stalemate has been vague.

但伊朗就巴西愿意担任伊朗储备的浓缩燃料的中立存储库的回应还是模糊不清的，虽然这作为一种有争议的尝试可以重启已陷入僵局的核谈判。

youdao

A: We view Russia's proposal as positive, believing it is a helpful attempt to break the stalemate of the Iranian nuclear issue.

答：我们对俄罗斯提出这个建议给予肯定，认为这是打破伊朗核问题僵局的有益尝试。

youdao

The stalemate, they argue, is not due to AECL's failure to deliver the reactor that it promised, but rather the nuclear regulator's demand that AECL should be held to that promise.

他们认为，形成这种局面不是因为AECL未能按其承诺建造反应堆，而是核管理机构要求AECL应该信守承诺。

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As negotiations over Iran's nuclear programme eached a stalemate in recent years, the US and the European Union intensified their sanctions against Iran's energy and banking sectors.

BBC: Iran currency crisis: Sanctions detonate unstable rial

The stalemate between Iran and the West over the nuclear issue has significantly increased tensions between the two sides in recent months.

WSJ: Iran Is Ramping Up Nuclear-Fuel Output