radiation
医生建议病人避免长时间暴露在X光辐射下。
The doctor advised the patient to avoid prolonged exposure to X-ray ___radiation.
医生建议他进行放射治疗以消除肿瘤。
The doctor recommended ___radiation treatment to eliminate the tumor.
暴露于核反应产生的高水平辐射可能是致命的。
Exposure to dangerously high levels of ___radiation from nuclear reactions can be fatal.