One and a half hours are allowed for the exam.
考试时间为一个半小时。
Today's children spend an average of four and a half hours a day looking at screens, split between watching television and using the Internet.
现在的孩子平均每天花四个半小时看屏幕，一半看电视，一半上网。
When he comes back two and a half hours later, they're still staying in the same place, continuing the same conversation on the same topic.
当他两个半小时后回来时，他们还在同一个地方，继续就同一个话题进行着同样的谈话。
Four and a half hours of discussion took us up to midnight.
我们讨论了四个半小时，一直讨论到午夜。
Strano's team found that they could create a faint light for three and a half hours.
Strano的团队发现，他们可以在三个半小时内产生微弱的光线。
But that wasn't the only obstacle we had to overcome as a couple — we also lived four and a half hours away from one another.
但这不是我们在一起要克服的唯一的阻碍——我们之间还相隔着四个半小时的路程。
In 1981 children in the United States spent an average of slightly less than two and a half hours a week doing household chores; by 1997 they had spent nearly six hours a week.
1981年，美国儿童平均每周花在家务上的时间略少于两个半小时；到1997年，这个时间达到近6个小时。
Three and a half hours have just vanished.
三个半小时就这么浪费过去了。
Yunbo: Rumei, our flight leaves in two and a half hours.
云波：如梅，再过两个半小时我们的航班就要起飞了。
The boss asked him to explain why he was two and a half hours late.
老板要他解释一下为什么迟到两个半小时。
The historical drama eventually clocked in at three and a half hours.
这部历史剧最终的时长达三个半小时。
There are still one and a half hours to go , we needn't be insuch a hurry .
还有一个半小时，我们无需如此慌慌张张。
I don't know how it's happened. Three and a half hours have just vanished.
我也不知道怎么会这样。三个半小时就这么浪费过去了。
On April 28, I gave four and a half hours of videotaped testimony in another Whitewater trial.
4月28日，在白水事件中的又一次审判中我提供了四个半小时的录像证词。
"A hummingbird can hover like a helicopter for one and a half hours, nonstop," Dr. Tobalske said.
“蜂鸟能像直升机一样悬停，且时间可以长达一个半小时，中间不间断，”托巴尔斯克说。
Two and a half hours later, when the concert was over, people were crying and hugging one another.
两个半小时后演唱会结束了，在场的人彼此相拥而泣。
Tracy and Steven had been up for two and a half hours, preparing our breakfasts and tidying the train.
特莱丝和斯蒂文已经起床两个半小时了，正为我们准备早餐和打扫卫生。
The American Time Use Survey found that employed people work an average of seven and a half hours a day.
美国人时间使用调查结果发现受雇佣者每天工作的平均时间为7.5小时。
It takes the space station one and a half hours to fly around the planet, making for 16 complete laps a day.
空间站环绕地球一周需要1个半小时，每天可以转16周。
Even though it's just one and a half hours away by bus, Rui only came home to see his family a few times a year.
他一年只能回家一两次，尽管南京离他家只有一个半小时路程。
And then after another half hour I trained another half hour, and all together I'd trained (for) two and a half hours.
然后我又练了半小时，再加半小时……结果总共练了两个半小时。
This will increase the amount of time a soldier can safely spend on board from just one and a half hours to ten hours.
这将使士兵的乘坐时间从只有一个半小时延长到十个小时。
I finished the testimony at about six-thirty, three and a half hours before I was scheduled to address the nation.
约6点半，我的作证结束了。按计划，三个半小时后我就得向全国发表电视讲话。
Lorry drivers in the European Union are not allowed to drive for more than four and a half hours without taking a break.
欧盟的卡车司机不允许连续开车超过四个半小时。
Harrison spoke for more than one and a half hours. He gave the speech outside, on the front steps of the Capitol building.
哈里森站在国会大厦外面的第一个台阶上发表了长达一个半小时的就职演说。
Putin returned to the surface after four and a half hours looking a little groggy, according to witnesses at the lakeside.
据岸上的目击者说，普京在潜水四个半小时后回到了地面上，过程中他看上去有些许脚步不稳。
“A hummingbird can hover like a helicopter for one and a half hours, nonstop,” Dr. Tobalske said. “No other bird can do that.”
蜂鸟可以像直升机那样不停地盘旋一个半小时“，托巴尔斯克博士说，”没有别的鸟能做到这一点“。
“A hummingbird can hover like a helicopter for one and a half hours, nonstop,” Dr. Tobalske said. “No other bird can do that.”
蜂鸟可以像直升机那样不停地盘旋一个半小时“，托巴尔斯克博士说，”没有别的鸟能做到这一点“。
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