The concept of law is essentially a matter of social fact.

在数学中，提出问题的艺术必须比解决问题更有价值。

中心地的六边形排列最小化了市场区域的重叠。

捕鱼技术的创新必须与保护工作齐头并进。

Never underestimate the power of observation—sometimes the smallest detail leads to the biggest discovery.

质量始于农场，卓越通过对细节的不懈关注来实现。