gaseous radwaste

例句：

1. 1. The atmosphere is composed mainly of nitrogen and oxygen, with a small amount of gaseous substances.
   大气主要由氮气和氧气组成，少量气体物质。
2. 2.Gases are made up of molecules that can move through the air.
   气体是由能通过空气移动的分子组成的。
3. 3.The scientist discovered that some gases could be used to detect explosives.
   科学家发现某些气体可以用来检测爆炸物。