hypognathous

例句：

1. 1. The hypognathous arch is a prominent feature of the human skull.
   头骨的矢状隆起是人脑显著的特征。
2. 2. The hypognathous arch is a prominent feature of the human skull.
   头骨的矢状隆起是人脑显著的特征。
3. 3. The hypognathous arch is a prominent feature of the human skull.
   头骨的矢状隆起是人脑显著的特征。