upper jaw bone 上颌骨
Upper jaw fracture 上颌骨骨折
primary upper jaw 初级上颌
upper jaw [解剖] 上颌 ; 上颚
upper jaw member [解剖] 上颌体
upper jaw pain 上颌痛
cleft upper jaw 上颌裂
Closed fracture upper jaw bone 上颌骨闭合性骨折
Open fracture upper jaw bone 上颌骨开放性骨折
Each side of the upper jaw has 350-400 baleen plates.
上颌两侧各有350-400个鲸须板。
A Chinese girl has become the first person born without an upper jaw bone to have full successful reconstructive surgery, according to reports from China.
一名中国女孩儿成了上颌骨缺失的第一人。据来自中国的报道，她接受的骨骼再造手术获得了圆满成功。
But even with the dinosaur's upper-jaw teeth hinging outward, they could likely still chew with their mouths closed.
不过，即使恐龙的上颌牙齿向外翻，他们吃东西的时候大概还是闭着嘴。
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