Wang Na was born with no upper jaw bone or teeth, making eating and speaking very difficult.
王娜天生就没有上颌骨和牙齿，这使得她吃东西和讲话都很吃力。
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。
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。
One group of whales has, instead of teeth, long strips of bone, hanging from their upper jaw. This is the baleen whale, the largest animal in the world.
有一类鲸鱼，用从上额骨垂下来的长条状的骨头代替牙齿，它就是须鲸，是世界上最大的动物。
Partial resection of the upper jaw causes dental and bone tissue defects, provoking physiological malformation.
切除部分上颌骨造成牙、颌骨组织缺损畸形，导致生理功能障碍。
A dermal bone of the upper jaw which lies posterior to the premaxillary.
上颌的一个表皮硬骨，在前颌骨的后面。
A dermal bone of the upper jaw which lies posterior to the premaxillary.
上颌的一个表皮硬骨，在前颌骨的后面。
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