a girl balances on one leg, holding her foot and glowering at a blushing boy, while another young couple dance in the background.

VOA: standard.2010.08.09

All right. With that by the way of background, let's go on to two -what we might call rhythmic devices here--two rhythmic devices.

以此为背景知识,我们来继续学习,两种节奏类型

耶鲁公开课 - 聆听音乐课程节选

Study at their views and I think what I'm talking about is really completely different, I have no sympathy for ideas that say we want to get rid of people because their racial background or because in somewhere they are blot on the Aryan folk.

我也研究了他们的观点，然而我觉得,我的学说和纳粹是全然不同的,我并不赞同他们的说法，那就是,我们要消灭一些民族，只因为他们不同的宗教,因为他们在雅利安传说中的,不良形象。

普林斯顿公开课 - 人性课程节选

And,each player's observations and interactions with the local people vary greatly, depending on his background.

VOA: standard.2009.11.05

This is generally the general introduction of the brain that I wanted to provide, giving the framework for what I'll be talking about later on throughout the course so that I might later on make reference to neurons or neurotransmitters or the cortex or the left hemisphere and you'll sort of have the background to understand what I'm talking about.

以上这些就是我所要讲的,关于大脑的综述,为我以后要讲的课程,建立起框架,往后我可能会提到神经元,神经递质,大脑皮层,或是大脑左半球,而拥有了背景知识的你们,便能够理解我在讲些什么

耶鲁公开课 - 心理学导论课程节选

"President Obama, based on an earlier story,had asked that the national security team gather further information on his background, including concerns that he might have been involved the deaths of a significant number of Taliban prisoners of war a few years ago.

VOA: standard.2009.08.17