在本文建立的力学模型中，作用在下颌上的合力和合力矩表示成下颌运动张角的函数。
The resultant force and the moment of force or torque acting on the mandible which were derived as a function of jaw opening Angle generate accelerations.
他雇了一名牙医把从奴隶嘴里拔出来的九颗牙移植到他的下颌上。
He hired a dentist to transplant nine teeth into his jaw—having extracted them from the mouths of his slaves.
他们的后裔逐渐提升了肺功能，鱼鳍进化为腿，下颌关节突生，以便提高陆地上的听觉。
Its descendants gradually improved the function of their primitive lungs, morphed their lobe fins into legs, and jury-rigged their jaw joints to hear in the air instead of water.
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