他强忍住沾沾自喜的笑容。

He tried hard not to smile in smug self-satisfaction.

《柯林斯英汉双解大词典》

她慢步走开，面无笑容。

She drew away and did not smile.

《柯林斯英汉双解大词典》

她忍住泪水，强作笑容。

She gulped back her tears and forced a smile.

《牛津词典》

Within 20 degrees of separation from you initial smile to the three people, the entire world will be smiling.

只需要20度的分隔,从你用笑容感染三个人开始，全世界就会笑起来。

哈佛公开课 - 幸福课课程节选

Even though we have a noun, the smile, that if you're not careful might lull you into thinking there must be a thing, the smile.

即使我们有笑容这个名词,如果你不够谨慎,可能会想当然地认为,一定存在着笑容这一事物

耶鲁公开课 - 死亡课程节选

And those nine people make three-- each one-- three other people smile.

那九个人-,每个人再用笑容感染三个人。

哈佛公开课 - 幸福课课程节选