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埃尔德什差异问题让我着迷,因为它陈述起来如此简单,但含义却如此深刻。
When you're young you think you're going to have lots of friends. But as you get older, you realize you can count them on one hand.
The heart is a fragile thing, easily broken, but also capable of great strength.
The faster technology evolves, the more we must invest in human wisdom.