大臼齿，简称臼齿，俗称磨牙（客语：撞牙），是人类和其它哺乳动物的一种牙齿。大臼齿位于口腔后方，因上端扁平而且主要用来研磨和咀嚼食物而得名。臼齿由于随使用而被磨损，可以被用来判定生物个体或其遗骸的年龄。
adj. molar
misc. cheek tooth ; axle-tooth ; dentes molares ; grinding tooth
它们也失去了棕熊用来咀嚼植物性食物所用的臼齿。
They also lost the grinding molars that brown bears use to chew up plant matter.
因此，那些保留的臼齿，也称作“智齿”是应该有的。
Therefore, when those reserve molars, aka "wisdom teeth," came in they were welcomed.
两只前爪里，大一点的、长着类似臼齿的东西的那只叫锤爪。
Of the two large forward claws, the larger claw linedwith what look like molars is called the Crusher.
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