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》

Without galactic assistance, I know of no other way to address the radioactive fallout problem.

没有银河人的援助，我知道没有其他办法解决放射性尘埃问题。

youdao

On the other hand, the radioactive fallout at the plant keeps mounting.

另一方面，核电厂的放射性沉降物不断聚集。

youdao

The biggest hazard of atmospheric tests was that radioactive fallout would get into the human food chain.

CNN: ASIANOW - Asiaweek

This could trigger a full-scale war, with missile attacks, radioactive fallout, economic turmoil and massive refugee flows.

CNN: North Korea: What are the options?

The UK charity Chernobyl Children's Life Line helps families in Ukraine and neighbouring Belarus affected by harmful radioactive fallout.

BBC: Inverness and Nairn charities host Chernobyl events