All right, so that notion of abstraction and we're going to come back to multiple times -- during the term-- and it's not just abstraction, -- it's the idea of a specification.

现在就试试,这就是抽象的概念,我回过来说，我们将要多次提到这个术语。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I don't have to worry about these relative dimensions because we know from Marsden's calculations that, on the length scale that I have shown here, these would be just tiny little dots.

我们不必考虑,它们的相对大小,因为从马斯登的计算中我们可以得知，就从我现在给你们演示的这种相对距离来说，这些电子将只是一些很微小的斑点。

麻省理工公开课 - 固态化学导论课程节选

I used to... you know, I lived and worked out of Sloane Lab up on the hill and it was easy to have office hours before or after class but now you have to make a special trip.

我以前...,我以前的工作和住的地方都是斯隆实验室外的,小山上,那时的开放时间设在课前或课后对我来说都很方便,但是现在你们就得费点儿周折了

耶鲁公开课 - 基础物理课程节选

Now there was inflation with regard to a basket of the Consumer Price Index is not just the price of gold; it's the price of many things but the there would be inflation or deflation as the relative price of gold changed.

现在，就一组物品来说，是存在通货膨胀的,消费者价格指数并不仅仅是金子的价格；,它是很多东西的价格，但是,当金子的相对价格变化时,通货膨胀或通货紧缩就会发生。

耶鲁公开课 - 金融市场课程节选