石油的真正成本不仅仅是每桶的价格，还包括环境和社会影响。

宇宙中无物浪费，无物贫瘠，无物死亡；无混沌，无混乱，除非表象如此。

Abstraction is the key to managing complexity in large software systems.

In the era of globalization, maintaining cultural identity is more important than ever.

数学与物理之间的相互作用带来了科学上一些最深刻的见解。