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.
Every story is a chance to see the world differently.
光给予建筑生命，没有光，建筑就失去了灵魂。
成功投资的关键是尽量减少成本和税收。
通货膨胀无论何时何地都是一种货币现象。