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

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