The hexagonal arrangement of central places is the most efficient for minimizing travel distance.
中心地的六边形排列是最大限度减少出行距离的最有效方式。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
The time factor is the most important in trading. Time can turn a small profit into a large one.
The truth is rarely pure and never simple.
生活没有意义，除非我们赋予它意义。