从社会学层面看，社会阶层出现的变量来自于群体的流动人口，对于这样一座城市来说有两个部分，出走的和留守的人口。

From a sociological perspective, variables of social class emerge from the mobile population groups, which have two parts for such a city, the leaving and left-behind population.

youdao

从社会学层面看，社会阶层出现的变量来自于群体的流动人口，对于这样一座城市来说有两个部分，出走的和留守的人口。

From a sociological perspective, variables of social class emerge from the mobile population groups, which have two parts for such a city, the leaving and left-behind population.

youdao