If you focus the sun's rays through a magnifying glass on a dry leaf, it will start to burn.
用放大镜把阳光聚到乾叶子上, 叶子就能燃烧.
The act or process of destroying most microorganisms in certain foods, such as fish or clam meat, by irradiating them with gamma rays or other radiation to prevent spoilage.
射线杀菌法破坏某种食品，如鱼或蚌肉内的大部分微生物的行为或过程，通过γ射线或其它放射线辐射的防止变质
The researches are concerned with alpha rays.
这些研究是关于阿尔法射线的。
