The students work with activities on their computer screen and wear a headset and microphone to talk to their tutor.

VOA: special.2011.04.21

So in sections where you have the opportunity to work in smaller environments with one of the teaching fellows, in office hours we have an opportunity to work one on one, hands-on in the computer lab or else we're on campus and really get personalized attention when it comes to diving into these problems.

因此在分组后,你们有机会与教员们一起在小房间里工作，在上机时间内我们有机会一对一授课，在实验室内亲身实践,不然的话我们在校园里探讨问题,会被很多人围观的。

哈佛公开课 - 计算机科学课程节选

When I'm on the computer, forty hours, fifty hours a week for work,

这是因为我一周要对着电脑工作四五十个小时。

如何利用空闲时间 - SpeakingMax英语口语达人