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。
Success is a journey, not a destination.
The companies that will thrive are those that see plastic not as waste, but as a renewable resource.
解释:知道房屋漏雨的人在房屋下,知道政策有失误的人在民间,知道经书错误的人在诸子。
Probability is determined both by the nature of our observations and by our conception of rationality.