The risorius and the buccinator muscles assist in the retraction of the lips, as well as support entrapment of air within the oral cavity.
笑
和颊
助唇的收缩,
支撑了整

的气体流通。
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顿》音乐剧精选
医学生日常 And I went in there,and there's this thing that goes onto your finger that tells about your oxygen saturation rate, and her oxygen saturation rate was like 94,93%,which isn't perfect,but it's nothing awful,and she had a little bit of abdominal retraction.
进去了,你手指上有一个东西可以告诉你你
血氧饱和度,她
血氧饱和度大约是 94. 93%,这并不完美, 但也没什么可怕
, 她有一点点
腹部收缩。