它从来没有披露过这第二个铀浓缩工厂的存在。
但是据推测还有更多需要检查的地方，包括铀浓缩工厂。
But there is presumably much more to inspect, including facilities for enriching uranium.
伊朗长期抗拒接受对其位于纳坦兹的铀浓缩工厂进行基于和平目的公开核查。
Iran had long contended that its enrichment plant at Natanz was intended for peaceful purposes and was open to international inspection.
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