"Calderon's public approval is now at 69 percent the highest of his administration because the people perceive that he is a decent man that handled the swine flu outbreak judiciously and that he is doing his level best to combat the narco-traffickers,"

VOA: standard.2009.06.09

What's happening there? Well, the selection of reactants has been done judiciously to provide either heat or to provide something that's cool.

就会感到这东西，比如说变冷了，对吧？,这里发生了什么？这些反应物都是,被仔细的选出来的，能够提供热量或制冷。

麻省理工公开课 - 热力学与动力学课程节选