Not race,not economic background, not an abusive childhood.

VOA: special.2009.04.27

It does not presuppose any background in philosophy.

不假设你们之前学过任何哲学。

耶鲁公开课 - 死亡课程节选

But not for the sake of hashing through the history of philosophy not for the sake of analyzing philosophical concepts the way analytical philosopher would, but rather,with that kind of background preparation, seeing things that others might not.

不是为了深入讨论,哲学的历史,不是为了像,一个分析哲学家那样,分析哲学概念，而是在有了那种背景知识的准备后，看到一些别人可能看不到的东西。

麻省理工公开课 - 电影哲学课程节选

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

But it's not her job. "I have no chemistry background.

VOA: standard.2010.05.06