high energy radiotherapy

例句：

1. 1. High-energy radiotherapy is used to treat cancers that have spread beyond the initial stage.
   高能放射治疗用于治疗癌症，这些癌症已经超出了初始阶段。
2. 2. The patient received high-energy radiotherapy for a period of six months.
   患者接受了高能放射治疗六个月。
3. 3. The radiation therapy was administered using high-energy beams.
   放疗使用高能束进行。