calvarial

例句：

1. 1.The skull of the dinosaur was found in the museum.
   在博物馆里发现了恐龙的头骨。
2. 2. He studied the structure of the human skull.
   他研究了人类头骨的结构。
3. 3. The skull is made up of several layers of bone.
   头骨由几层骨头组成。