There are many factors that can define the middle class in a society, such as money, behaviour and heredity.

有许多因素可以定义的中产阶级的社会中，如金钱，行为和遗传。

youdao

There are many factors that can define the middle class in a society, such as money, behaviour and heredity.

有许多因素可以定义的中产阶级的社会中，如金钱，行为和遗传。

youdao