中部肋骨

例句：

1. 1.The surgeon removed the midrib to relieve the patient's pain.
   外科医生切除了中肋骨以缓解病人的疼痛。
2. 2. The patient was lying on his back with his midrib exposed.
   病人平躺在背上，他的中肋骨暴露在外。
3. 3. During surgery, the surgeon had to cut through the patient's midrib to access the heart.
   在手术过程中，外科医生必须切断患者的中肋骨来接触心脏。