Please smile everyday. Happy Forever.

请微笑每一天。永远幸福。

youdao

Baby, please smile.

小宝宝，请笑一笑。

youdao

So please smile to your life and not get angry easily.

所以请对生活保持微笑，不要容易生气。

youdao

Now, the person who is the mandated smiler, on three, please smile. One, two, three. Okay.

现在，要求微笑的一方，我数到三，微笑，一，二，三。

耶鲁公开课 - 心理学导论课程节选