Come by every corner is a laughter, your every move carried out in joy, and you even open the window, but also a happy laugh, you can not laugh it?

所走到的各个角落都是一片欢笑声，你的一举一动都在欢乐中进行，甚至你打开窗子，也是一片快乐的笑声，你能不笑吗？

youdao

And just like that jolly laugh you cannot resist joining in, a smile can be contagious and you as the spreader become instrumental in not only your own happiness but that of others as well.

就像你无法抗拒开心的微笑一样，微笑是会传染的，你也可以成为微笑的传播者，在帮助自己开心起来的同时也带给别人快乐。

youdao

You can laugh for things you are not so sure with.

你不确定的事情就可以一笑置之。

youdao

You can laugh for things you are not so sure with.

你不确定的事情就可以一笑置之。

普林斯顿公开课 - 人性课程节选

If it's not, you don't laugh -- or at very worst, you can leave quietly.

CNN: If you don't want to hear an edgy joke, don't listen