I knew some of it, but it has been interesting to do the background on it."

VOA: special.2010.06.28

And, furthermore, to put the background in front, 1s2 2s2 2p3 let's do the electronic structure. It is 1s2, 2s2, 2p3.

此外，把他的背景知识都翻出来，我们分析一下电子结构，这是。

麻省理工公开课 - 固态化学导论课程节选

So hopefully, the first experiment he did, which I know that they certainly did do was maybe it's just background noise, right?

做的第一个实验，我相信他们肯定,是这样做的？

麻省理工公开课 - 化学原理课程节选

"It kind of happens in the background, because I have an iPhone which I love.

VOA: special.2009.09.14

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

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 amplifies the background you've said.

这样就能拓展你刚才提出的想法。

麻省理工公开课 - 电影哲学课程节选

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

VOA: standard.2010.05.06

It doesn't presuppose any background in philosophy.

它并不需要任何哲学基础。

耶鲁公开课 - 死亡课程节选

It just recedes into the background.

只是不再重要。

耶鲁公开课 - 死亡课程节选

And the fact that we're always facing some risk of death recedes into the background in the way that most of us don't hear background noise-- that what jumping out of an airplane does for you is it spikes the risk of death.

我们一直面对的某些死亡的风险,这种情况下变成了背景声音,因为我们大部分人都听不到背景的噪声-,而跳下飞机带给你的,是死亡的风险上升。

耶鲁公开课 - 死亡课程节选