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.
He who refuses to do arithmetic is doomed to talk nonsense.
成功不仅仅以利润来衡量，还以我们创造的积极影响来衡量。
The mind is to be studied as an end in itself.
The only thing that can make you a leader is your vision.
I don't want to be a product of my environment. I want my environment to be a product of me.
在距离与重量成反比的情况下，物体处于平衡状态。