An hour and a half is allowed for the exam.

考试时间为一个半小时。

《牛津词典》

After half an hour, the fish stopped biting and we moved on.

过了半小时，鱼不再上钩，我们就走开了。

《柯林斯英汉双解大词典》

An order came down from on high that lunchbreaks were to be half an hour and no longer.

上头指示说午餐休息时间不得超过半小时。

《牛津词典》

And it can go from zero to ninety-five kilometers an hour in just two and one half seconds.

VOA: special.2009.11.03

Part of it is, it takes me an hour and half to settle myself down enough, that I'm actually paying attention and, be more aware of what happening.

每一次，都需要一个半小时,来让我的头脑镇静下来，然后我才能真正地集中注意，感受身边发生的事情。

普林斯顿公开课 - 人性课程节选

It's about maybe half an hour, one hour from Barbados and maybe another hour and half from Puerto Rico.

从巴巴多斯岛到那儿大概要半小时或一小时；从波多黎各到那儿则需要再花上一个半小时。

和纽约的留学生 - SpeakingMax英语口语达人

Half an hour of cardio and half an hour of weight training.

FORBES: Invest In Human Capital -- Your Body's

Since 1998 it has dropped by an hour and a half for men and by over half an hour for women.

ECONOMIST: Working time

The trains will run at 220 mph and the first leg would be from New York to Philadelphia (a trip taking about half an hour, compared to an hour and a half now) by 2023.

BBC: The futurist: Putting the choo-choo back in Chattanooga