They were exposed to radioactive fallout during nuclear weapons tests.

他们在核武器试验过程中暴露于放射性核辐射。

《柯林斯英汉双解大词典》

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.

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。

youdao

This year’s observance of the International Day Against Nuclear Tests marks the twentieth anniversary of the closure of the nuclear weapons test site at Semipalatinsk, Kazakhstan.

今年禁止核试验国际日正值哈萨克斯坦塞米巴拉金斯克核武器试验场关闭20周年。

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South Korea warns any long-range launch by the North will be a violation of a U.N.resolution passed in 2006, when North Korea conducted long-range missile and nuclear weapons tests within months of each other.

VOA: standard.2009.03.12

The six nations reached an agreement in September 2005, creating a framework for gradually reducing the North's arsenal, while normalizing its relations with Japan,the United States, and South Korea.Since then,however, North Korea has conducted two nuclear weapons tests.

VOA: standard.2009.12.11

The United States maintains that the self-described satellite launch would violate U.N.Security Council Resolution 1718, which bans North Korean nuclear weapons and ballistic missile tests, and was approved after Pyongyang's 2006 nuclear test.

VOA: standard.2009.03.12

It has test-fired missiles from there before, and its three nuclear weapons tests were carried out in the east.

BBC: Korea crisis: UN's Ban warns of 'serious implications'

The Mumbai killings fueled renewed tensions between South Asia's long-time rivals, who have fought three wars since independence and conducted tit-for-tat nuclear weapons tests in 1998.

CNN: India hands Mumbai attacks file to Pakistan

More than 1, 000 ex-servicemen say their lives were destroyed after the UK carried out a series of nuclear weapons tests in mainland Australia, the Montebello islands off the west Australian coast and on Christmas Island, in the Pacific, between 1952 and 1958.

BBC: Veterans' long battle for nuclear tests' compensation