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The United States has no permanent enemies, no permanent friends, only permanent interests.
美国没有永恒的敌人,也没有永恒的朋友,只有永恒的利益。
大众对大小事都有无尽的求知欲---除了真正值得知道的事例之外。
除非有勇气远离海岸,否则你永远游不到新的地平线。
I think prime numbers are like life. They are very logical but you could never work out the rules, even if you spent all your time thinking about them.