These are physical knobs that are available us as experimentalists. And so when we turn these knobs on our system, we want to know how the enthalpy is changing for that system.

这些都是我们做实验可,以得到的物理变量,所以当我们在系统中,改变这些量的时候。

麻省理工公开课 - 热力学与动力学课程节选

The discount rate was a policy variable set by the Fed and it was typically fifty basis points below the Federal Funds Rate.

贴现率是一个联邦可改变的政策,并且它比联邦资金利率通常,低五十个基本点。

耶鲁公开课 - 金融市场课程节选

So he but he moves to question ? should law be changed? Is law changeable?

是的，但他还是质问,法律应被修改吗？法律是可改变的吗？

耶鲁公开课 - 政治哲学导论课程节选

In fact in spite of the way we tell our story we actually changed the assignment.

尽管实验的过程是这样,可我们实际做了些改变。

麻省理工公开课 - 媒体、教育、市场课程节选

There are probably those of you in the class already who are outraged by things like the modern food environment, how much energy it takes to transport things from place to place, lack of concern with sustainability and issues like this, and you'd like to see social change.

在坐的各位当中可能已经有人,对目前的食品环境感到愤怒,很多能量浪费在食品相关的运输上,忽略了对可持续性的关心等问题,你可能希望社会会有所改变

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选