When his toplofty and thin lips closed firmly, two careworn wrinkles were cutting through two sides of his cheek deeply, stretching from his shallow dimples at the corners of the mouth to his chin.

那高傲的薄薄的嘴唇紧紧抿着，从嘴角的微涡起，两条疲倦的皱纹深深地切过两腮，一直延长到下颔。

youdao

Her lips closed firmly.

她的嘴唇紧闭着。

youdao

Professor Paul Bloom: I don't know if that's--The question is, "Is there a difference between smiling with your teeth versus just your lips closed?"

我不知道是否，问题是，微笑露齿与不露齿有不同吗“

耶鲁公开课 - 心理学导论课程节选