I got about half the answers right.
我的回答约有一半是正确的。
Only about half of the electorate bothered to vote.
只有约半数的选民参加了投票。
That's about half the going price on world oil markets.
那大约是世界石油市场上现行价位的一半。
About half the subjects considered themselves to be telepathic.
大约有一半的实验对象认为自己有心灵感应能力。
About half of all smokers are killed by their addiction, WHO reported.
世界卫生组织报告说，约一半的吸烟者死于他们的癖好。
About half of those funds has gone to repair public roads, structures, and bridges.
那些资金中大约一半用于维修公路、建筑物和桥梁。
About half of its city center will be closed to cars.
市中心约有一半区域将禁止汽车通行。
About half of them are children, and another 8% are elderly.
他们之中大约有一半是儿童，另外8%是老人。
There are about half a million kinds of seeds inside the vault.
金库里大约有50万种种子。
They only succeeded in taking away about half the annual budget.
他们只成功地拿走了大约一半的年度预算。
When it was nearly morning, some fishermen lit a fire on the shore about half a mile away.
快到早晨的时候，一些渔民在半英里外的岸边生火。
About half of the mathematicians studied by Benjamin Bloom had little good to say about school.
本杰明·布卢姆研究过的数学家中，约有一半人对学校没有什么好感。
In the 1990s enough electricity to meet about half the needs of San Francisco was being generated there.
在20世纪90年代，那里产出的电能大约能满足旧金山一半的用电需求。
This is not only a problem in developing countries. About half of all pregnancies globally are unintended.
这不仅是发展中国家的问题，全球约一半的怀孕都是意外怀孕。
This is not only a problem in developing countries, about half of all pregnancies globally are unintended.
这不仅是发展中国家的问题，全球约一半的怀孕是意外怀孕。
Equally unsurprisingly, only about half end up with professorships for which they entered graduate school.
同样不足为奇的是，尽管人们考研究生院是为了教授职位，但最终只有一半的人能够梦想成真。
Cars account for half the oil consumed in the U.S., about half the urban pollution and one fourth the greenhouse gases.
汽车消耗了美国一半的石油，导致了美国约半数的城市污染和四分之一的温室气体。
Only about half a dozen people turned up.
只有六七个人到场。
I only slept about half an hour that night.
那天晚上我只睡了大约半个小时。
It takes about half an hour to get to the airport.
到机场大概需要半小时。
The journey to the airport takes about half an hour.
到机场大约需要半小时。
The nearest bank is about half a mile down the road.
最近的银行沿着这条路要走半英里。
The cost is about half as much again as it was two years ago.
现在的价格比两年前提高约一半。
The band only played for about half an hour—it was a real sell.
乐队仅仅演奏了大约半个小时—真让人失望。
The number of students majoring in the humanities has declined by about half.
主修人文学科的学生数量已经下降了近一半。
That's about half of the world's population!
那大约是世界人口的一半！
It is about half size of our planet.
它大约是地球的一半大小。
He has been in Beijing for about half a year.
他来北京已经有半年了。
At any moment, about half of the world's population is wearing jeans.
在任何时候，世界上都有大约一半的人穿着牛仔裤。
"Joey" was a length of garden hose about half a metre long.
“乔伊”是一根长约半米的花园软管。
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