NP完全性的概念为理解计算问题的复杂性提供了一个强大的工具。
The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.
我们唯一需要害怕的就是害怕本身。
The key to successful investing is to have a strong understanding of the fundamentals, a disciplined approach, a clear understanding of the market, a long-term perspective, and a clear understanding of the risks and rewards.
The future of coal depends on balancing economic growth with environmental care.