irradiation embrittlement

例句：

1. 1. The cancer cells were exposed to ionizing radiation and died.
   癌细胞暴露在电离辐射下死亡。
2. 2. Irradiation can cause mutations in DNA, which can lead to genetic diseases.
   辐射可以导致DNA突变，进而引发遗传疾病。
3. 3. Radiation therapy is used to treat cancer by exposing the patient to high-energy rays.
   放射治疗通过让患者暴露于高能射线来治疗癌症。