交换、交易和互换的倾向普遍存在于所有人之中，而在其他动物种族中找不到。

Profit and sustainability must swim side by side, or both will sink.

The study of Galois representations is a key to unlocking the mysteries of the Langlands program.

The beauty of instrumental variables is that they allow us to see the world in a new light.

谎言环游全球的时候,真相还没穿好裤子。

Efficiency in farming is not about doing more with less, but about doing better with what we have.

世界是一个神秘的地方，我们都在努力找到自己的道路。