The concept of NP-completeness has provided a powerful tool for understanding the complexity of computational problems.
NP完全性的概念为理解计算问题的复杂性提供了一个强大的工具。
Ah, my Beloved, fill the Cup that clears TO-DAY of past Regrets and future Fears: To-morrow!—Why, To-morrow I may be Myself with Yesterday's Sev'n thousand Years.
你影响力的唯一限制是你的想象力和承诺。
Memory， I realize， can be an unreliable thing； often it is heavily coloured by the circumstances in which one remembers.
过去半个世纪最重要的政治发展是自由民主在世界范围内的传播。
The only way to escape suffering is to embrace it.