The Warners were from a Jewish working-class background.

沃纳一家人是犹太工人阶级出身。

《柯林斯英汉双解大词典》

Competition is seen as an open and fair race where success goes to the swiftest person regardless of his or her social class background.

竞争被看作是一个公开、公平的竞赛，胜利总是归于跑得最快的人，而不管他的社会阶级背景。

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He's always going on about his working class background.

他老是谈论自己出身于工薪阶层家庭。

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Critics say the national exam is biased, since it presumes a level of knowledge and cultural background that students from working class families may not have.

VOA: standard.2010.02.02

Let me give a little bit background on positive psychology: how we came about and how this class came about.

下面介绍一下积极心理学的背景：,它是如何诞生的，这门课是如何诞生的。

哈佛公开课 - 幸福课课程节选

All three outcomes were more common in women and those from a working-class background.

BBC: Child headaches 'a long-term pain'

Their success despite a working-class background appears to be the greatest source of frustration for critics.

CNN: Comment: Football star's lavish wedding a class issue

Instead, I am in the "precariat", which means I am likely to come from a working class background.

BBC: Class calculator: A US view of the class system