One and a half hours are allowed for the exam.

考试时间为一个半小时。

《牛津词典》

They held him for three hours and they let him go.

他们扣押了他3个小时才放走他。

《柯林斯英汉双解大词典》

Fights between police and marchers lasted for three hours.

警察和游行者之间的战斗持续了3个小时。

《柯林斯英汉双解大词典》

Passengers will pay two hundred thousand dollars to ride to outer space and back for two and a half hours.

VOA: special.2009.12.18

Another value for community learning we set up to have office hours, synchronized office hours, with the students and the professor.

学习社群的另一个价值,在于给学生和教授，制定办公时间，有规律的办公时间。

麻省理工公开课 - 媒体、教育、市场课程节选

And there are very few people that you can sit down and speak to for, like, eight hours at a time.

很少有人你可以坐在一起,一次就能聊天聊8个小时。

普林斯顿公开课 - 人性课程节选

Thain must carry out 270 hours work and is banned for three years, Bridge must do 215 hours work and is banned for two years and Leys has to carry out 235 hours work and his ban is for two-and-a-half years.

BBC: Aberdeen fans sentenced over Glasgow subway disorder

That is why prior to that fateful date of February 6th, grown men hold up in hotels and driveways for hours on end, waiting for a return call and opportunity to be an influencer with a teenager.

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They've danced and strutted for hours in the heat and delighted the crowds.

BBC: Mundo | Aprenda ingl��s | Londres celebra el carnaval