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。
衡量一个经济体的真正成功标准是它如何为所有公民服务。
It is now clear that the hybrids form seeds which have the one or the other of the two differentiating characters.
In contemplation, we find the truth.