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愉快是健康的最佳促进者。
Cheerfulness is the best promoter of health.
The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.
我们所做的可能很微小,但却产生巨大影响。
Innovation is the key to staying ahead in a competitive market.