The paper industry has a responsibility to lead the way in environmental stewardship.
模形式的算术是理解数论更深奥谜团的关键。
希望存在于任何黑暗中。
The science shows that our minds lie to us about what will make us happy.
我不是一个喜欢传统的人。
最好的艺术是慷慨的。
The mining industry has a responsibility to leave a positive legacy for future generations.