radioactive gas

例句：

1. 1. The researchers foundthat the air in this area was heavily contaminated with radioactive gases.
   研究人员发现这个地区的空气中含有大量的放射性气体。
2. 2.The scientists were concerned about the potential health risks associated with breathing radioactive gases.
   科学家们担心呼吸放射性气体可能带来的健康风险。
3. 3. The accident led to a release of radioactive gases into the atmosphere, causing widespread concern among the public.
   事故导致放射性气体释放到大气中，引起了公众的广泛关注。