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》

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

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

While the treaty has not entered into force, the world still uses the treaty's monitoring system (the CTBT Organizations International Monitoring System) to detect nuclear-weapons tests.

CENTERFORSECURITYPOLICY: Why we need to test nuclear weapons

The ongoing conflict in Kashmir - a simple question of sovereignty that has spawned two wars between Pakistan and India since 1947 - took on added significance earlier this year when both nations conducted underground tests of nuclear weapons.

CNN: A FAILURE AT THE TOP