She came from a working-class background...是什么意思？

She came from a working-class background...

她出身于工人家庭。

she

pron. 她，它；

例句
Her lover walked out on her after she had aborted their child.
她的情人在她打掉胎儿后甩了她。

came

v. 来( come的过去式 )，到达，达到（认识、理解或相信的程度），出生；

例句
She came in for a coffee, and told me about her friend Shona...
她进来喝了杯咖啡，并向我谈起了她的朋友肖纳。

from

prep. （表示时间）从…，（表示原因）因为，（表示来源）来自…，（表示分离）与…分离[隔开]；

例句
...an abortive attempt to prevent the current President from taking office.
企图阻止现任总统连任的失败尝试

background

n. （画等的）背景，底色，背景资料，配乐；

例句
The Pope has sent a message appealing for unity in his homeland, against a background of divisions in the Solidarity movement...
团结运动中各派搞分裂，在此情况下教皇发出号召，呼吁祖国保持团结。