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P与NP问题是计算机科学中最重要的未解决问题之一。
The P versus NP problem is one of the most important unsolved problems in computer science.
The past is always tense, the future perfect.
即使在艰难时刻,我也总是努力保持积极。
The future of energy lies in the integration of traditional fossil fuels and renewable energy sources.
My inspiration comes from dreams and also reality.
The only time success comes before work is in the dictionary.