veins of lower lip

例句：

1. 1.She was so embarrassed that she couldn't speak for a moment.
   她非常尴尬，一时说不出话来。
2. 2.The doctor examined the patient's lower lip veins and found no signs of infection.
   医生检查了患者的下唇静脉，没有发现感染的迹象。
3. 3. During the party, he noticed that his friend had bruised his lower lip veins.
   在聚会上，他注意到他的一个朋友的下唇静脉被撞伤了。