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种一棵树最好的时间是20年前,第二好的时间是现在。
I am not a hero of mathematics. I'm not even that successful; that is why I don't want to have everybody looking at me.
过去并未死去,它甚至还未过去。
Shor's algorithm has profound implications for cryptography and the security of digital communications.
The quality of a country's institutions is the single most important determinant of its long-term economic performance.