One and a half hours are allowed for the exam.

考试时间为一个半小时。

《牛津词典》

I was half tempted to give one of them a clout myself.

我几乎都想亲自去把他们当中的一个打一顿。

《柯林斯英汉双解大词典》

Buy one, get the second one half off.

买一件，第二件就半价。

youdao

Helen was their first child. Until she was a year-and-one-half old, Helen Keller was just like any other child.

VOA: special.2009.11.08

If one chord holds twice as long or only half as long, then we have an irregular harmonic change--irregular rate of harmonic change.

如果某一个和弦持续的时间是其他和弦的两倍或者只有一半，这就是不规则的和声改变。

耶鲁公开课 - 聆听音乐课程节选

All of those slave societies had a population of slaves that was from one-quarter to one-half, and sometimes more, of the total population.

这些奴隶社会的奴隶人口都占总人口,的三分之一到一半,有时甚至更多

耶鲁公开课 - 美国内战与重建课程节选

We might be able to get away with one-half or one-fifth of that.

FORBES: Talking Nano With IBM

It also helps that accommodation and labour costs are between one-half and one-third those of rival hubs, such as Dublin and Luxembourg.

ECONOMIST: How the euro and technology are changing an island economy

Korman ordered the requirement lowered to one-half-of-one-percent, and the state legislature later changed the law in advance of the year 2000 election period.

CNN: Republicans step up fight over primary ballot in New York