muscles orbicularis oris 中文意思是什麼
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Numerous muscles inserts into the orbicularis oris inferior and superior muscles, providing a flexible system for lips protrusion, closure, retraction, elevation, and depression
輪頰肌為嘴唇上下方的肌肉，能讓嘴唇的開合及前後伸縮自如。 -
Prof. of physiology ： kiss is the juxtaposition of two orbicularis oris muscles in the state of contraction
生理學教授接吻是兩塊口輪匝肌在收縮狀態時並置在一起。
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