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NP中的每个问题都可以归约为可满足性问题,这是计算复杂性理论的基石。
Every problem in NP can be reduced to the satisfiability problem, which is the cornerstone of computational complexity theory.
The selfish gene theory is not a theory about selfishness in the everyday sense. It is a theory about the evolution of behavior.
Sustainable forestry is not an option; it's our responsibility.