I got about half the answers right.
我的回答约有一半是正确的。
I only slept about half an hour that night.
那天晚上我只睡了大约半个小时。
Only about half of the electorate bothered to vote.
只有约半数的选民参加了投票。
The journey to the airport takes about half an hour.
到机场大约需要半小时。
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。
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。
This wastes about half of the wafer material.
这浪费了大概一半的晶圆材料。
There is about half an acre around the house.
房子周围大约有半英亩地。
He'll arrive at the office in about half an hour.
他大约半小时后会到办公室。
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。
In July, a sister craft of the crashed spaceplane was reported to be about half-finished.
据报道，今年7月，与失事航天飞机同类型的一个飞行器已经完成了大约一半。
In one recent US survey, about half the teens polled said that their cell phone had improved their communication with friends.
在美国最近的一项调查中，接受调查的青少年中约有一半表示，他们的手机改善了他们与朋友的交流。
Two geologists discovered that about half of the sand from the Grand Canyon was actually once part of the Appalachian Mountains.
两位地质学家发现，约半数的来自大峡谷的沙子实际上曾经是阿巴拉契亚山脉的一部分。
That's only a small share of the total acreage that could benefit, about half a million acres in all, so it will be vital to prioritize areas at greatest risk of fire or drought.
这只是受益总面积的一小部分，共约50万英亩，所以优先考虑火灾或干旱风险最大的地区是至关重要的。
It takes about half an hour to get to the airport.
到机场大概需要半小时。
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 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。
Only about half a dozen people turned up.
只有六七个人到场。
They destroy only about half of the crops.
他们只摧毁了一半的作物。
Generally, the inner tent is about half the area of the outer tent.
一般来说，内层帐篷的面积是外层帐篷的一半。
It's about half an hour's journey.
大约半小时路程。
It is about half size of our planet.
它大约是地球的一半大小。
How about half past two tomorrow afternoon?
明天下午两点半，怎么样？
That's about half of the world's population!
那大约是世界人口的一半！
He has been in Beijing for about half a year.
他来北京已经有半年了。
"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。
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。
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