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P与NP问题是计算机科学中最重要的一个问题之一。
The P versus NP problem is one of the most important problems in computer science.
The study of language is ultimately the study of the human mind.
The only way to have a good day is to start it with a positive attitude.
I like a film to have a beginning, a middle, and an end, but not necessarily in that order.
你看不见你自己,你所看见的只是你的影子。