So I am not just talking about agreement in principle but concrete results regarding spending and solidarity,".

VOA: standard.2009.03.20

Now, I want to do one concrete problem where you will see how to use these derivatives.

现在我要解决一个具体的问题,从中你会明白如何运用这些导数

耶鲁公开课 - 基础物理课程节选

They provided a service to society and society responded by somehow they got their wealth, so I think that -- So be concrete.

他们为社会提供了服务,作为回报，社会让他们以某种方式变富，所以我认为-,所以具体来说。

耶鲁公开课 - 公正课程节选