upper lip
柯林斯词典
1. N-COUNT Your upper lip is the part of your face between your mouth and your nose. 唇上部位[usu sing]
The beginnings of a moustache showed on his upper lip. 胡须开始出现在他的唇上。
2. N-COUNT Your upper lip is the higher of your two lips. 上嘴唇
His upper lip was flat, but the lower one sagged. 他的上嘴唇扁平,但下嘴唇却是下垂的。
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