由于印度不是禁止核武扩散条约的签约国，因此美国与印度的这些核能条约势必会对该条约是一个重大的挑战。

Since India is not a NPT signatory, the nuclear agreement between the U. S. and India is bound to pose a major challenge to that treaty.

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中国已先后签署了《不扩散核武器条约》和《全面禁止核试验条约》，并忠实地履行了这两个条约规定的义务。

China has signed the Treaty on the Non-Proliferation of Nuclear Weapon and the Comprehensive Test Ban Treaty, and faithfully fulfilled the obligations set by the two treaties.

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