President Obama will be directly involved in one aspect of the campaign a White House science fair that will showcase top student experiments from across the country.

VOA: standard.2009.11.24

For 6 years,I was a resident tutor in Leverett House when I was a graduate student and then I also started to teach.

我做过6年莱弗里特宿舍的住校导师,我研究生在读时，就开始任教。

哈佛公开课 - 幸福课课程节选

So, it's very well designed such that they've minimized any of these destructive interference dead sounds. So, it's nice, on a student budget you can go and get the worst seat in the house and you can hear just as well as they can hear up front, even if you can't actually see what's going on.

世界上最好的两三个音乐厅之一,它的设计十分精巧，把任何相干相消,都见到了最低，所以这点对于你们,用学生预算买到一个最差的位置的人,来说是很好的，你们可以听得,像前排一样清楚，虽然你们,可能看不见台上发生了什么。

麻省理工公开课 - 化学原理课程节选

A student experiment in robotics was front and center at the White House.

VOA: standard.2009.11.24

"I was at the USA House the other day talking to somebody about our student group, and I went on after our discussion, and then he came back and he came over and shook my hand and said how impressed he was with what we were doing."

VOA: standard.2010.02.26