软骨性颅

例句：

1. 1. The patient's condition required a bone graft to repair the damaged area.
   患者的病情需要一块骨头移植来修复受损区域。
2. 2. The doctor performed an operation to remove the tumor from the patient's cartilage-like skull.
   医生进行了手术，将肿瘤从患者的软骨性颅骨中移除。
3. 3. The study focused on understanding the biological mechanisms underlying the development of cartilage in the human skull.
   该研究关注于理解人类颅骨软骨发育的生物学机制。