7.never frown, even when you are sad, because you never know who is falling in love with your smile.就算你不快乐也不要皱眉

7.never frown, even when you are sad, because you never know who is falling in love with your smile.就算你不快乐也不要皱眉，因为你永不知道谁会爱上你的笑容。