If you have a piece of paper in your hand,and there is a black dot on the white paper.Optimist will say"What I saw is a piece of paper".But pessimist will say"All I saw is that black dot."
希望对亲有帮助啦!
If you have a piece of paper in your hand,and there is a black dot on the white paper.Optimist will say"What I saw is a piece of paper".But pessimist will say"All I saw is that black dot."
希望对亲有帮助啦!