functional underclass功能性的底层
Black Underclass黑人底层阶级
troubled underclass麻烦的下层阶级
an underclass下级
information underclass信息平民阶级
institutional underclass制度性底层
Genetic Underclass遗传基因低等
The Underclass底层阶级
N-COUNT（可数名词） A country's underclass consists of those members of its population who are poor, and who have little chance of improving their situation. 底层社会 [usu sing]
The basic problems of the inner-city underclass are inadequate housing and lack of jobs.
内城里底层人的基本问题是没有足够的住房和工作。