ampulla of rectum

例句：

1. 1. The doctor advised him to exercise regularly to maintain his health.
   医生建议他定期锻炼以保持健康。
2. 2.The patient was instructed to follow a healthy diet and avoid smoking.
   病人被告知要遵循健康饮食并避免吸烟。
3. 3.The surgery involved the removal of the ampulla of rectum for cancer treatment.
   这次手术是为了治疗癌症而切除直肠括约肌。