我认为可爱就是真诚的微笑。

I think the real cute is to smile sincerely.

youdao

大部分人都能辨别出真诚的微笑。

Most of us can spot a genuine smile.

youdao

什么可以让一个真诚的微笑更真诚？

What Make An Honest Smile Honest?

youdao

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