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 most profound discoveries often come from the simplest observations."
写作不是治疗，而是寻求真相。
Sustainable forestry is not just about cutting trees; it's about ensuring the future has forests to cherish.
Even if we're apart, our hearts are always together.
你可以撼动星辰。你可以做任何事，只要你敢。而在内心深处，你也知道这一点。这就是最让你害怕的地方。
The foundation of every government is some principle or passion in the minds of the people.