Sustainability must be the cornerstone of modern quarry operations, not an afterthought.

学习任何事情的最好方法就是去做。

The key to successful investing is to minimize costs and taxes.

"A book is a fragile creature, it suffers the wear of time, it fears rodents, the elements and clumsy hands. So the librarian protects the books not only against mankind but also against nature and devotes his life to this war with the forces of oblivion."

食品工业是最后一个被技术颠覆的大型产业。