如果像几个盟国所提议的"核任务共同责任已经结束"，那么核安全保障将本质上不得不可信。
NATO's nuclear guarantee will be substantially less credible if, as several allies have proposed, shared responsibility for nuclear missions is ended.
伊朗的代表绷着一张脸，支持关于加强核安全保障的强有力宣言，同时也有助于阻止强制制定更加严格的条款的举动。
With a straight face, Iran's representative endorsed the ringing declarations about strengthening nuclear safeguards, while also helping block moves that would have made tougher rules mandatory.
我们同意加强在核安全问题上的合作，这对于达到在四年内保障所有危险核材料的安全的目标至关重要。
And we agreed to increase cooperation on nuclear security, which is essential to achieving the goal of securing all vulnerable nuclear material within four years.
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