Let 's go for a walk and blow the cobweb away.

咱们去散散步，清醒一下头脑。

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And let's say our second electron now is really far away, such that it's actually not going to shield any of the nuclear charge at all from that first electron.

距离原子核非常非常近,我们说第二个电子处于非常远的位置,这样它不会对第一个电子,感受到的来自原子核的电荷量有任何屏蔽作用,我们最后要说的是。

麻省理工公开课 - 化学原理课程节选

It's going to let us bury away the specifics of something, and treat that computation like a black box. And by black box, I mean, literally behaves like a mysterious little black box.

通过抽象我们可以将一些细节,掩埋起来并将这一段计算当成黑盒,说到黑盒我的意思就是,字面上的像一个神秘的小黑盒。

麻省理工公开课 - 计算机科学及编程导论课程节选

So it's just a measure of how much does one given atom want to pull away electron density from, let's say, an adjacent atom.

因此，它就是度量一个给定原子有多么,想把电子密度拉过来，可以说，从相邻的一个原子那里。

麻省理工公开课 - 化学原理课程节选

As a man walks past, Mr Desire hands him a leaflet: "Let's do away with unemployment in France!"

BBC: French far-right leader Le Pen looks west for votes

Let's prove that there's no better place to do business than here in the United States of America, and let's start right away.

BBC: State of the Union: Obama pledges to reignite economy

"Let's not run away with ourselves here, " he told reporters.

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