And so instead of defining efficiency the way you've got it written there, I'm going to define what's called something different for a refrigerator which is called the coefficient of performance.

现在我们不用,效率的那个定义，我给出一个,有关制冷机的,新的定义,叫做制冷系数。

麻省理工公开课 - 热力学与动力学课程节选

But let's look for a slight variant of it, where greedy is not so good. And that's what's called the zero-one knapsack problem.

但是让我们找一找它的一些变种，在这些变种中贪婪算法用处不大,这些问题也就是0/1背包问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

I have plans for you called plans for learning because that's what it's all about.

那个计划叫做学习计划,因为这就是这门课程的意义。

麻省理工公开课 - 固态化学导论课程节选

What FASB does for the United States is it creates what are called Generally Accepted Accounting Practices.

财务会计准则委员会为美国所做的贡献,就是制定了国际公认会计准则

耶鲁公开课 - 金融市场课程节选

So if you're working with cyanide in the lab as potassium cyanide or sodium cyanide, those are what are called p h s's, it's a rating for different kinds of chemicals.

因此如果你在实验室中,需要用到氰化物，比如氰化钾或者氰化钠，这就是所谓的，“P，H，S“,这是化学药品有害程度的一个级别。

麻省理工公开课 - 化学原理课程节选