She is smiling. If you know the story, her smile clearly says: "I won."

VOA: special.2010.04.25

I think both of us would love to see your smiling faces, or at least your faces, even if you're not smiling at us every day.

我觉得我们俩都想,看到你们微笑的脸，或者至少是你们的脸，即使你们不是每天都朝着我们俩笑。

麻省理工公开课 - 计算机科学及编程导论课程节选

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