a social group that consists of people who earn little money, often being paid only for the hours or days that they work, and who usually do physical work

The working class usually react/reacts in a predictable way to government policies. 工人阶级通常会以可预料的方式对政府政策作出反应。

Compare: lower class middle classupper class

belonging to a social group that consists of people who earn less than other groups, often being paid only for the hours or days that they work, and who usually do physical work rather than work for which you need an advanced education

working-class people/families 工人阶级人员/家庭

He was born to Irish immigrants and grew up in a working-class neighbourhood. 他出生在爱尔兰移民家庭，在工人阶级社区长大。