主要内容是：我相信欢乐可以治病.快乐是最好的药物,当你生病时,想一些开心的事情,痛苦会减轻.***就是因为快乐,病才好了起来.所以我们要天天都开开心心的,能保持健康!

I believe that happiness could cure disease,which is the best medicine.when you get sick,think happy things and the pain will be down.*** turn to be healthy cause happinessm.So we could keep health if we are happy everyday