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The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion.
解释:人有知识,犹如树木有枝叶,树木有了枝叶,能带给人阴凉,人有了知识,就可以为人民做更多的事。
石油和天然气领域的创新不是选择,而是可持续发展的必需。