具体说说”经济增长的质量和效益“是指什么，还有“内生增长”，帮助理解。
有一位指挥这些马车的军官说，在他一生中，他从这次残酷的战争所学到的东西要远比他所有参加过的战斗中学到的东西都要多。
Suffering was terrible. An officer who led the wagon train said he learned more about the horrors of war on that one trip than he had learned in all of his battles.
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