Media use totaled an average of five and one-half hours a day.

VOA: special.2009.02.11

And they have graciously meet available their complete Film library. Not just the documentaries but the films They use before cut together the documentary for every hour of documentary their might be a hundred more hours of source video and film.

他们还实现了完整的电影图书馆,不仅是成型的纪录片,还有最初未剪辑的完整电影,每一个小时的纪录片背后他们可能,有超过100个小时的资料片电影。

麻省理工公开课 - 媒体、教育、市场课程节选

Course assistants as we use the jargon are alumni of CS50 who return to the course for a couple of hours a week having taken it in prior years, to help you, the newest batch of students, one on one with office hours, with problem sets; and similarly do the CS function as they might in many courses.

课程助理用我们的行话说就是CS50校友0,他们在前几年一直都是一周回来几个小时,来帮助你们这些新生，在上机的时候以一对一的方式，帮助你们完成这些问题集,在很多其他课程中他们也是这么做的。

哈佛公开课 - 计算机科学课程节选

Of what possible use were the hours it would tick away now?

VOA: special.2010.05.15

Experts say accountability is key in determining the future use of certain practices such as confining thousands of protesters into small areas for hours on end and of some officers removing badge numbers from their uniforms in crowd control situations.

VOA: standard.2009.04.21