这样，不仅能使其他人感到快乐，因为你的笑有可能是他们几天来收到的唯一笑容，而且你将会发现他们也会给你同样的笑容让你感到更开心。
You will not only make others feel great because they received what may have been the only smile they received in days, but you'll find they will smile back at you which will make you feel better to.
开怀大笑，笑到不能自已如果你觉得你的朋友能使你开心，那就多花时间和她呆在一起。
Laugh often, long and loud. Laugh until you gasp for breath. And if you have a friend who makes you laugh, spend lots and lots of time with him or her!
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