I couldn't concentrate, presumably because I was so tired.
我的精神集中不起来，大概是太累了吧。
Bilingual speakers often do better than monolinguals in completing certain tasks because they can concentrate better on what they are doing.
由于双语者能更好地专注于他们正在做的事情，所以他们通常比单语者在完成某些任务时做得更好。
Examinations are probably a poor instrument for measuring the quality of education because they concentrate on grades instead of abilities.
考试可能不是一个衡量教育质量的好方法，因为考试更看重成绩而不是能力。
When we travel down a well-known route, because we don't have to concentrate much, time seems to flow more quickly.
当我们行驶在熟悉的线路中，因为我们不必聚精会神，时间似乎流逝得更快些。
Because these reactors don't concentrate too much heat in one place, no active cooling systems would be necessary to cool them — excess heat would be dispersed in the ambient air.
由于这些反应堆不会在一地聚集太多的热量，不需要用主动冷却系统去冷却它们，过热的热量将在周围空气中消散。
Because it lets the company concentrate sales efforts on its most profitable customers.
因为它让公司可以把销售努力集中到盈利贡献最高的客户身上。
Most of the proposals concentrate on revamping the regulators rather than the regulated, perhaps because it is easier.
多数提议都是针对监管者，而不是面对被监管者，也许因为修补前者更容易。
Compared with their better-fed peers, nutrition-deficient children have more diseases and lower educational standards (perhaps because they cannot concentrate in class).
与营养充足的同龄人相比：营养不足的孩子更易生病，受教育水平更低（可能是因为上课不能集中精力）；
Mental exercises can help because they strengthen your ability to concentrate, and will improve your focus over time.
思维训练之所以对你有所帮助，是因为它们会加强你注意的能力，而且还会慢慢地改善你的注意力。
Partly because most RACES here in the UK don't allow it, but also because I like to be able to concentrate on what's going on around me.
部分原因是因为在英国举行的大多数比赛不允许这种行为，也因为我喜欢在比赛中能够集中精神关注发生在我周围的一切。
Accordingly, there are times when we procrastinate simply because it is difficult for us to concentrate on a project, the benefits of which will not be realized until some time in the future.
相应地，我们多次拖延只是因为一旦做一件工作要很久以后才能有现实的好处，这样就很难集中精神到这件工作上。
By contrast, he said, people in the New York metropolitan area can concentrate their efforts along the shorelines because the land rises quickly away from the coast.
他说，与之相比，纽约大城市的人们仅仅关注于海岸线地区就足够了，因为陆地从沿海岸线很快升高。
Many relationships fail because both parties concentrate their attention on their partner’s flaws instead of the qualities they love about them.
很多情侣最终分手就是因为双方都只注意到对方身上的缺点而忽视了他们所喜欢的优点。
Ron Paul: "I want to get rid of one item to concentrate on, because Ithink it's the worst part."
罗恩·保罗：“我想先集中精力废除一个项目，因为我认为这是最恶劣的部分。”
You're onto something big. Because hard work ain't hard when you concentrate on your passions and dreams.
你马上要做成一件大事，因为当你全神贯注在热情和梦想上，那些辛苦就根本算不了什么了。
In the war of the American Revolution Britain lacked a continental ally, and Britain's enemies were able to concentrate their efforts because they were not distracted by a continental land war.
美国独立战争中，英国缺乏大陆盟友，英国的敌人能够集中力量，因为他们不会因为这场在大陆进行的战争而分心。
This results in productivity gains because you are not required to restart the container, allowing you to concentrate on unit testing the components you are interested in.
这有助于提高效率，这是因为无需重启此容器，让您能集中精力对感兴趣的组件进行单元测试。
The user must concentrate to register activity because sensors are not yet sophisticated enough to read subconscious thoughts.
使用者必须专注于大脑的活动，因为传感器还不能读取人类的潜意识。
This benefits the developer because you can concentrate on designing the application rather than the integration code that sits around it.
这使得开发员受益匪浅，因为您可以关注于设计程序，而不用去管将代码集成起来。
So if you catch yourself working hard and loving every minute of it, don't stop. You're on to something big. Because hard work ain't hard when you concentrate on your passions and dreams.
如果你发现自己努力工作，并且乐在其中，那么别放弃，你正迈向成功，因为当你把激情与梦想都投入其中，再辛苦的工作你也浑然不觉了。
Because it behaves chemically like calcium, it tends to concentrate in the bones and teeth.
在化学性质上它与钙相似，趋于进入人的骨骼和牙齿。
For the purposes of this article, I concentrate on the body of the of the code list because when you have this logic, developing the other sections is simple.
基于本文的撰写目的，我主要关注于代码清单，因为当您实现这个逻辑之后，其他部分就很简单了。
This well-written and well-researched book struggles to concentrate upon its subject, constantly going off on interesting tangents instead, because of the sheer paucity of information about her.
这本传记文笔流畅、调查充分，致力于围绕其主题，有时会转而聊些有趣的话题，因为实在是缺乏有关她的资料。
It's unpleasant, because you can't concentrate on other things while your brain is trying to predict the missing parts of the overheard conversation, studies show.
研究表明，这很不愉快，因为当你大脑试着猜测串音谈话中错过的部分时，你不能集中精力。
Out of the five types of basic changes previously specified, our discussion will concentrate on refinement and removal because of their impact on query formulation and results.
在前述五种基本变化类型中，我们主要讨论精化和删除，因为它们影响查询公式和结果。
Concentrate particularly on areas of the layout that are less relevant to the purpose of a page, because visual activity in these areas will distract attention from the key content and navigation.
特别是对布局不太相关的领域的一个页面的目的精矿，因为在这些领域的视觉活动会分散注意力的重要内容和导航。
He explained:"It is because they are able to engage with their surroundings, feel more comfortable and so concentrate."
他解释说：“这是因为他们能够与环境融合，感觉更加舒服，因此注意力也更集中。”
Noisy offices can make it hard to concentrate because of all the different things going on.
喧闹的办公室让你难以集中注意力，因为太多不同的事情都在同时进行。
Noisy offices can make it hard to concentrate because of all the different things going on.
喧闹的办公室让你难以集中注意力，因为太多不同的事情都在同时进行。
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