数学的本质不是使简单的事情复杂化，而是使复杂的事情简单化。

The international system is inherently competitive, and states are constantly trying to outmaneuver each other.

【释义】：教导媳妇要在刚过门时开始，教育孩子要从婴儿时期抓起。  

The only difference between a rat and a human is that a rat learns from experience.

林业的创新不仅仅是技术，更是思维方式的转变。