Through lots of research, Cress found out that Americans use about 500 million straws every day.
通过大量的研究，Cress 发现美国人每天使用大约5亿根吸管。
Houses built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that expand over time and let in more outside air.
1939年以前建造的房屋每平方英尺消耗的能源比2000年以后建造的房屋多50%，这主要是由于微小的裂缝随着时间的推移而扩大，更多的外部空气进入了裂缝。
In my case I want to use about 3 pixels of feather.
在这里，我使用了3个像素的羽化。
We use about 410 billion gallons per day for the nation as a whole.
全国每天耗水量为4100亿加仑。
If you want to describe something approximately, you can use About，e.g.
如果你想要做大致的描述，你可以用About（大约）,例如:About 15 RMB（大约15元）;
They use about one-third of the energy of normal bulbs and last 10 times as long.
它们的耗电量仅是普通灯泡的三分之一，持续时间却是后者的10倍。
I have about 23 passwords that I have to know and I use about a dozen of them everyday.
我有23个密码要记，每天都要用到的密码大约就有一打。
They now use about half as much water per gallon of ethanol as they did a decade ago.
他们现在只需要十年前一半的水，就能生产一样多的乙醇。
The company's 200 desktops and laptops from H-P use about 40% less power than earlier models.
这家公司使用的200台惠普台式机和笔记本电脑耗电量比以前的机型低大约40%。
Use about a handful of Kosher salt for each six quarts of water - depending on the size of your hands.
6夸脱的水放一小抓盐。
The proportion of salt used also varies but it is common practice to use about 5 lbs. per 280 lbs. of flour.
用盐的配比也有差异通常做法是每280磅面粉约用5磅盐。
About 40% of all iPhone users use about 4 to 6 apps at least once a week. Only about 5% use more than 20 apps per week.
大约40%的iPhone用户拥有4到6款每周至少使用一次的应用程序，而只有5%的人每周使用超过20款应用。
Use about 1/10 kg. of rice and 6 dates for each dumpling. The dates must be covered by the rice so that they won't lose too much syrup in cooking.
每个粽子里包约100克糯米和6个枣，枣要用米裹好以防止蒸煮时糖分的流失。
Farmers use about three-quarters of the world's water; industry USES less than a fifth and domestic or municipal use accounts for a mere tenth.
全球可用的水量中，农夫用掉四分之三，工业用不到五分之一，家庭和都市用水不到十分之一。
The vegetarian diets of Africa and Asia use about 2,000 litres a day (for comparison, Westerners use just 100-250 litres a day in drinking and washing).
相形之下，西方人一天用于盥洗的水量也不过100-250公升。
Areva, a nuclear-power group, recently launched a scheme to address the needs of older employees, and plans to use about 100 retired people a year through Experconnect.
一个名为Areva的核能公司，最近发起了一项解决老龄工人短缺的计划，并打算通过Experconnect启用大约100位退休人员。由于近十年来，核能技术不再流行。
What is the use of a book about interior design without a plenitude of pictures in colour?
如果没有大量的彩色图片，一本有关室内设计的书还有什么用呢？
Science is now enabling us to make more informed choices about how we use common drugs.
科学现在使得我们能够对如何使用常用药品做出更明智的选择。
Concern about excessive Internet use isn't new.
对过度使用互联网后果的担忧已是老生常谈了。
What does the author say about our use of language?
作者对我们的语言使用有何看法？
Though humor is essentially social, how you use it says a lot about your sense of self.
尽管幽默本质上是社会性的，但你如何使用它却能反映出你的自我意识。
There should be careful consideration about the use of such toxic chemicals.
应有对这些有毒化学品的使用的慎重考虑。
What's the use of worrying about it?
为此事操心有什么用呢？
It introduced lots of new American words, with information about their pronunciation, use and the new spelling.
它介绍了许多新的美国单词，以及它们的发音、用法和新的拼法。
With so much focus on children's use of screens, it's easy for parents to forget about their screen use.
由于对孩子手机使用的过多关注，家长们很容易忘记他们对手机的使用。
With so much focus on children's use of screens, it's easy for parents to forget about their screen use.
由于对孩子手机使用的过多关注，家长们很容易忘记他们对手机的使用。
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