They'll smile appropriately, making an important point that smiling is not learned by looking at other people's faces.

他们会适当地微笑，说明微笑不是学习的,通过观察其他人的面部表情。

耶鲁公开课 - 心理学导论课程节选

The mouth moves up, particularly if somebody is attacking their record or ridiculing them, and they'll smile and--but it's not a sincere smile.

嘴唇移动，特别当有人攻击他们的记录,或嘲笑他们时，他们会微笑，但不是真诚的微笑。

耶鲁公开课 - 心理学导论课程节选

Pan Am is a now defunct airline which had at that time They were--They don't call them stewardesses anymore but they're-- the stewardesses would come in and they would smile.

泛美现在已经倒闭了,他们不在称之为女服务员了,但是他们是-,女服务员进来就会微笑。

耶鲁公开课 - 心理学导论课程节选