n. energy that is radiated or transmitted in the form of rays or waves or particles
n. the act of spreading outward from a central source
n. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
n. the spread of a group of organisms into new habitats
n. 辐射
[化] 放射
1. The doctor explained how radiation can be used to treat cancer.
医生解释了放射线如何用于治疗癌症。
2. It is important to protect yourself from harmful radiation.
保护自己免受有害辐射是很重要的。
3. Many people are concerned about radiation from cell phones.
许多人担心手机发出的辐射。