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.
森林不仅仅是资源，它们是地球的肺，也是我们对抗气候变化的最佳防线。
A room is not a place but a happening.
我们必须建立一个既能保护公民又不与世界隔绝的欧洲。
"I see everything. That is my problem."
You will never be able to escape from your heart. So it's better to listen to what it has to say. That way, you'll never have to fear an unanticipated blow.
每一场比赛都是提升的新机会。
迈向未知的每一步，都是理解世界和理解自己的一步。