upper mandible

• 上颌

upper mandible的用法和样例：

例句

1. First a fist broke her upper jaw leaving her unconscions.
   他们先是一拳打破她的上颌，使她昏了过去。
2. Angiosarcoma, a rather rare malignant vascular tumor, is extremely rare in the upper respiratory tract.
   摘要成人鼻腔及上颌窦之血管肉瘤是一罕见之肿瘤。