Radiation consists of very small particles of a radioactive substance. Large amounts of radiation can cause illness and death. 辐射物
noun [专属名词] 辐射，放射线；辐射的热（或能量等）；放射疗法；辐射形进化，发散状分化
Ozone is the earth's barrier against ultra-violet radiation. 臭氧是地球防止紫外线辐射的屏障。
后缀: tion
【noun】 表示某种行为、状态或结果 - indicating an action, process, or result
原词: radiation
是通过后缀 【tion】 构成的派生词
