She finds the right spool of microfilm, takes it to a darkened room and threads it on a viewer.

VOA: special.2010.06.28

He's somebody to be emulated from the point of view of the viewer.

在观众看来,他是值得仿效的人物

耶鲁公开课 - 欧洲文明课程节选

Final question Tom, and this is from a viewer who send in the question by Twitter,to be submitted to you.

最后一个问题，这是一个观众的提问,通过twitter网站，提交给你。

斯坦福公开课 - 经济学课程节选