mandibleKK [ˋmændəbəl] /ˈmændəbəl/发音名词1下颚骨、下巴解剖学The X-ray showed a hairline fracture in his mandible.X光显示他的下颚骨有一道细微的裂痕。2大颚、口器昆虫学Ants use their powerful mandibles to carry food back to the nest.蚂蚁用强而有力的大颚把食物搬回巢里。3下喙鸟类学The bird's lower mandible is slightly longer than the upper one.这种鸟的下喙比上喙稍微长一些。用这个字练口说→