So I haven't done magic, I've given you a really fast way to solve a knapsack problem, but it's still exponential deep down in its heart, in something.

所以我并没有施魔法，我已经告诉了你,一种快速解决背包问题的方法了,但是某些方面它的核心仍然是指数增长的。

麻省理工公开课 - 计算机科学及编程导论课程节选

But a framework in which to understand it is that pro-slavery ideology was, at its heart, a kind of deeply conservative, organic worldview.

支撑奴隶制度思想体系的框架,若要去理解这副框架的话,其核心,是某种极度传统,接近自然的世界观

耶鲁公开课 - 美国内战与重建课程节选

This first slide shows a graph of the impact of having metabolic syndrome on heart disease and its consequences.

这张图表明了代谢综合征,对心脏病的影响以及造成的结果

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

If you could image how the heart is moving, you would know a lot about its function.

如果你对心脏进行动态造影,你就会了解它的很多功能了

耶鲁公开课 - 生物医学工程探索课程节选

Okay, so one possibility is that if somebody is underweight that creates its own set of heart consequences.

好的,有一种可能性是体重过轻,本身会导致一系列的心脏问题

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We're going to come back and talk about the action potential a little bit more when we talk about how the heart works, because the heart when its contracting, the muscle cells also use action potentials to initiate contraction.

我们讲心脏工作原理时,会回头再多讨论一点动作电位,因为心脏收缩时,肌肉细胞也利用动作电位来启动收缩

耶鲁公开课 - 生物医学工程探索课程节选