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数据表明,社会上层的收入从1980年以来根本没有多大的增长,有些人的收入反而下降。因此,不平等加剧的原因在于中低收入家庭的收入停止增长。
The data show that the incomes of the upper class have not risen at all at all since 1980, while some people have actually declined their incomes. Therefore, the reason for the increase in inequality is that the income of low- and middle-income families ceased to grow.