middle income group

例句：

1. 1. The middle-income group is the largest consumer market in China.
   中等收入群体是中国最大的消费市场。
2. 2.This policy aims to help the middle-income group achieve financial independence.
   这项政策旨在帮助中等收入群体实现财务独立。
3. 3. The government has introduced a series of measures to support the middle-income group's economic development.
   政府已经推出了一系列措施来支持中等收入群体的经济发展。