计算复杂性的概念不仅仅是我们能计算多快，还包括理解什么是可以计算的极限。
The concept of computational complexity is not just about how fast we can compute, but also about understanding the limits of what can be computed.
山间千年以上的树是有的，但世上百岁以上的人却不多见。
耳朵是负责听的，听了之后再加以审察，这叫做聪明。
在石油和天然气行业，能够生存下来的公司将是那些最快适应低碳需求新现实的公司。
To promote the high-quality development of the coal industry, we must rely on technological innovation and intelligent upgrading.