depressor muscle of lower lip 降下唇肌 bayonet shape tongue depressor 枪形压舌器 bent metal tongue depressor 弯形金属压舌器 .
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The depressor anguli oris muscle depress the corner of the mouth, the mentalis muscles pulls the lower lip out, and the platysma depresses the mandible.
降鼻翼肌可将嘴角下拉，颏肌可让下唇向外伸展，颈阔肌可使下颔下移。
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