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来源：雅诚德英语网
The key to raising the proportion of the middle-income group lies in increasing the income of the low-income group and regulating the excessively high income.
扩大中等收入者比重的关键在于提高低收入者收入水平 ，调低高收入者收入 ；
The key to raising the proportion of the middle-income group lies in increasing the income of the low-income group and regulating the excessively high income.
扩大中等收入者比重的关键在于提高低收入者收入水平 ，调低高收入者收入 ；