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

you know, people are extra friendly, but it's not necessarily genuine or whatever.

你知道，特别友善，但不一定是真诚的或是怎么样的。

加州的天气 - SpeakingMax英语口语达人

And I don't-- and they seemed sincere but if people say, "I can tickle myself," how many people here will own up to being able to tickle themselves?

我不…,他们说得很真诚，但如果有人说，“我可以胳肢自己”,有多少人承认自己可以,胳肢自己？

耶鲁公开课 - 心理学导论课程节选