物理理论的美在于它能够统一看似无关的现象。

Success in mining isn't just about extracting resources; it's about extracting value responsibly.

The most important thing is to have a vision of what you want to do and then to have the persistence to carry it out.

中心地的等级越高，其服务的区域越大，此类中心地的数量越少。