rectal tracheal gill

例句：

1. 1. The patient had arectal examination to check for any abnormalities.
   病人进行了直肠检查以检查任何异常。
2. 2. The doctor advised the patient to avoidrectal bleeding by changing their diet.
   医生建议病人通过改变饮食来避免直肠出血。
3. 3. The patient was instructed to follow aspecific diet to prevent rectal issues.
   病人被指示遵循特定的饮食以避免直肠问题。