A studio of three hours' lecture in a large lecture hall, and two hours of recitation in groups of thirty.

在一个大的讲堂的教室里,讲三个小时讲座，并以三十人为一组,进行两小时背诵。

麻省理工公开课 - 媒体、教育、市场课程节选

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

They would sit around the fire and hang out for two, three hours without saying a word.

他们围坐在篝火边两三个小时，一句话也没说。

哈佛公开课 - 幸福课课程节选

Well, but it ought so in the midst that the bullion, was at the end of the bullion conversation that went on forth actual three and a half hours, and you saw the shortened version.

在他黄金事业中间应该有的挫折，一般都在事业的最后出现,总时长三个半小时，你们看了缩短版。

麻省理工公开课 - 电影哲学课程节选

And she has to catch a flight, and you know the flight is going to leave in three hours and she's taking her time.

她马上得去赶飞机，你知道飞机在三个小时后就要起飞了。可她还在磨磨蹭蹭。

Make sure 课堂 - SpeakingMax英语口语达人

you always have to sit in the same room for three hours for multiple classes.

你必须在同一个房间为了多个课程坐三个小时。

对于古怪教授 - SpeakingMax英语口语达人