His round-trip commute to work is less than that. "I wouldn't have to put a dime of gas in this ever."

VOA: standard.2010.07.30

No, we call that work positive work. All right, so that means we need to put a negative sign right here, by convention.

历史上有过不同的习惯，这里我们规定,如果环境对系统做功。

麻省理工公开课 - 热力学与动力学课程节选

And I hope the president will work with us to build a responsible budget that will help strengthen our economy and put Americans back to work again,".

VOA: standard.2009.03.24