His smile never left his face, but his fingers shook as he touched the flower on his coat.

VOA: special.2009.04.04

Then when they stand up and face the crowds, there's a big smile.

但当他们面对人群站立时，他们露出了大大的微笑。

耶鲁公开课 - 心理学导论课程节选

You know, even some goes pass you on the street and you don't smile ostensibly you don't smile-- there are certain micro-muscles in your face that are moving that actually make you feel better.

即使路人与你擦身而过时，你没笑,表面上你没有笑-,但你面部的细微肌肉,会收缩，让你感觉更好。

哈佛公开课 - 幸福课课程节选

There was a smile on his face.

VOA: special.2010.07.31