学习数学的唯一方法就是做数学。
The only way to learn mathematics is to do mathematics.
可持续性不是一种趋势，而是一种必需品。
I’m going to use all my tools, my God-given ability, and make the best life I can with it.
We are all ghosts of ourselves, haunting the places we once lived.
The people who are crazy enough to think they can change the world are the ones who do.
乳制品行业关系到国民健康，我们必须以最高的标准要求自己。
He who knows only his side of the case knows little of that.