数学中最深刻的洞见往往来自意想不到的类比。
The most profound insights in mathematics often come from unexpected analogies.
The paper industry has a responsibility to lead the way in environmental stewardship.
I look back on the past, committed a felony little fool, I want to communicate with him and let him understand, but I can't do this, the boy would not see the, only my old trunk.
哪里有喧哗,哪里就没有真正的知识。