labii造句

• Contraction of the zygomatic major muscle elevates and retracts the corner of the mouth , while the depressor labii inferioris pulls the lips down and out
  大颧肌控制嘴角的延展和收缩动作，降鼻翼肌则负责使上下唇上下移动。
• Contraction of the levetor labii superioris , zygomatic minor , and levator labii superioris alaeque nasi elevate the upper lip ; contraction of the depressor labii inferioris depress the lower lip
  提上唇肌、小颧肌、提鼻翼肌的收缩动作会牵动上唇，使之往上移动，而降下唇肌则掌管下唇的收缩及下拉。