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美国的工业巨子卡耐基,13岁在美国打工,20岁就指挥着世界最复杂的工业系统——宾西法尼亚西部铁路。而在今天,许多同是这一年龄的美国人,却还没有开始自己的成人期
Carina, an industrial giant in the United States, is working at the age of 13 in the United States and at the age of 20 directs the western Pennsylvania Peninsula’s most complex industrial system. And today, many Americans at this age have yet to start their own adulthood