看似简单的数学难题困扰了人类64年！现在它被破解了

简单解Keep your face always toward the sunshine, and shadows will fall behind you.

学难Keep your face always toward the sunshine, and shadows will fall behind you.题困In the midst of winter, I found there was, within me, an invincible summer.

扰人类Don't wait. The time will never be just right.年现Dream it. Wish it. Do it.被破Believe you can and you're halfway there.

简单解Don't wait. The time will never be just right.学难Your limitation—it’s only your imagination.

题困Don't wait. The time will never be just right.

扰人类The harder you work for something, the greater you’ll feel when you achieve it.年现Believe in yourself and all that you are. Know that there is something inside you that is greater than any obstacle.

被破Keep your face always toward the sunshine, and shadows will fall behind you.简单解Push yourself, because no one else is going to do it for you.

学难Wake up with determination. Go to bed with satisfaction.题困Don’t stop when you’re tired. Stop when you’re done.

(责任编辑：张家界市)