他们在核武器试验过程中暴露于放射性核辐射。
They were exposed to radioactive fallout during nuclear weapons tests.
在我们纪念第一个禁止核试验国际日之际，我期望同所有伙伴合作，控制核武器开支，消除世界上的核威胁。
As we mark the first International Day against nuclear Tests, I look forward to working with all partners to rein in spending on nuclear weapons and rid the world of the nuclear threat.
支持核武器试验的人主张，要克服此难题的一个方法是用新设计的弹头来替代旧的弹头，新的弹头将不需要通过这种方式进行实地试验。
One way to overcome this would be to replace the warheads with newer designs that, proponents argue, would not need to be live-tested in this way.
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