upper jaw

基本解释

Wang Na was born with no upper jaw bone or teeth, making eating and speaking very difficult.
王娜天生就沒有上頜骨和牙齒，這使得她喫東西和講話都很喫力。
“They already had teeth in the upper jaw, so they had the enamel, dentine and other necessities,” he said.
它們的上頜已經有牙齒了，所以長牙的必要條件已經具備，如牙釉質、牙本質和其他。
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.
一名中國女孩兒成了上頜骨缺失的第一人。據來自中國的報道，她接受的骨骼再造手術獲得了圓滿成功。

Doctors removed some of President Cleveland's teeth and much of his upper left jaw.

Crucially, 62000 has a reasonably well-preserved upper jaw, which the type specimen lacks.
ECONOMIST: Human ancestry has just got more complicated
It cut through his upper jaw and skull bones, killing him.
FORBES: The Most Dangerous Power Tools
Equally significantly, a different computer reconstruction shows that the upper jaw of 62000 does not match another famous fossil from the area, known as KMN-ER 1802.
ECONOMIST: Human ancestry has just got more complicated