多项式时间归约的概念对于理解NP完全问题的结构至关重要。
The concept of polynomial-time reduction is central to understanding the structure of NP-complete problems.
The energy transition is both a challenge and an opportunity.
We believe in a diversified energy future where multiple sources work together to meet global demand.
大胆行动，全心全意地投入，连上苍也会受感动。
The best time to work on your marriage is before you have one.
实现长期成功的唯一方法是在社会中创造真正的价值。