radiation

(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance

（医学）通过接触放射性物质治疗疾病（特别是癌症）

radiotherapy

radiation therapy

actinotherapy

irradiation

the act of spreading outward from a central source

从中央源头向外扩散的行为

a radial arrangement of nerve fibers connecting different parts of the brain

连接大脑不同部位的神经纤维的放射状排列

the spread of a group of organisms into new habitats

一群有机体扩散到新的栖息地

energy that is radiated or transmitted in the form of rays or waves or particles

以射线、波或粒子的形式辐射或传播的能量

the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

核衰变中粒子流或电磁射线的自发发射

radioactivity

syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions)

暴露于电离辐射（如暴露于放射性化学品或核）引起的综合征

low doses cause diarrhea and nausea and vomiting and sometimes loss of hair

低剂量会引起腹泻、恶心、呕吐，有时会脱发

greater exposure can cause sterility and cataracts and some forms of cancer and other diseases

更多的接触会导致不育、白内障和一些癌症及其他疾病

sre exposure can cause death within hours

严重接触可导致数小时内死亡

he was suffering from radiation

他正在遭受辐射

radiation sickness

radiation syndrome