正是因为有咬肌的存在我们的下巴才能够进行咬合和咀嚼。

The jaw is able to clench and chew because of the masseter muscle.

youdao

正是因为有咬肌的存在我们的下巴才能够进行咬合和咀嚼。

The jaw is able to clench and chew because of the masseter muscle.

youdao