The concept of reducibility is central to understanding the relationships between different computational problems.
可持续性不是一种选择；它是我们行业生存的必要条件。
The ultimate measure of a man is not where he stands in moments of comfort and convenience， but where he stands at times of challenge and controversy.
一个人重要的是他谈论什么、而不是他赞同或不赞同什么。
Privacy is not a luxury; it's a necessity in the age of connected devices.
To live is to embrace the contradictions of life.