So the Institute of Medicine proposed that residents be required to get five continuous hours of rest for every sixteen hours on duty.

VOA: special.2010.07.13

We have them for five hours and we have them work.

我们给学生五个小时,让他们工作。

麻省理工公开课 - 媒体、教育、市场课程节选

We've been stuck in it for five hours now.

我们已经被困在里面5个小时了。

There is 实战 - SpeakingMax英语口语达人

Two hours after Apollo Thirteen went around the moon, the astronauts fired the rocket for five minutes.

VOA: special.2009.07.22

I think for the past three months, I've only had five or six hours of sleep at night.

我觉得在过去三个月里，每晚我就睡5到6个小时。

I need 实战 - SpeakingMax英语口语达人

Five hours after the explosion, flight controllers advised firing the rocket for thirty-five seconds.

VOA: special.2009.07.22