Smith hoped this would prove his faith in the American private business system.

VOA: special.2011.02.10

The second question is: from the pedagogical perspective, not from the business perspective, but from the pedagogical perspective, do we know what the learning system is all about?

第二个问题是：,从教学法的角度看，不是商业视角，而是教学法的角度，我们明白什么是,学习体系吗？

麻省理工公开课 - 媒体、教育、市场课程节选

And so we talked very briefly last time about this business of antigen presentation, how your immune system-- one of the things that it does especially well, is recognize what's part of you and what's not part of you.

上次我们简单的提到过,有关抗原呈递的一些知识,你的免疫系统如何,这也是免疫系统尤其擅长的一点,就是识别哪些部分属于你,哪些不属于

耶鲁公开课 - 生物医学工程探索课程节选

"We are committed to helping more Americans to get the health care coverage they need, not through nationalizing the system with a costly government-run plan, but rather by supporting free-market incentives to help small business owners to make coverage more accessible and affordable,".

VOA: standard.2009.08.08