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煤炭行业必须进化,否则有过时的风险。适应是生存的关键。
柠檬问题发生的原因是卖家比买家更了解产品,从而导致市场失灵。
"The power of a story is that it can change the world."
The said truth is that it is the greatest happiness of the greatest number that is the measure of right and wrong.