rectocolonic

例句：

1. 1. The doctor performed arectal exam to check for any abnormalities.
   医生进行了直肠检查，以检查任何异常。
2. 2. The patientwas instructed to lie on hisback with his legs apart during theprocedure.
   患者在手术过程中被指示平躺在背上，双腿分开。
3. 3. The patient's rectal temperature was taken to determine if hehad a fever.
   患者直肠温度被测量，以确定他是否有发热。