肛门直肠的

例句：

1. 1. The doctor performed a rectal examination on the patient.
   医生对病人进行了直肠检查。
2. 2. The patient had to wait for an hour before the procedure was completed.
   病人在手术完成前不得不等待一个小时。
3. 3. The patient's symptoms improved after the surgery.
   手术后，病人的症状有所改善。