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The most advanced agricultural systems still depend on the most fundamental element: healthy soil.
复杂性理论告诉我们,并非所有问题都是平等的;有些问题本质上比其他问题更难。
"if you think tough men are dangerous, wait until you see what weak men are capable of.
艺术的可怕之处在于你不知道它会把你带向何方。