跟我背CET4核心词汇:focus

　　focus

　　vt. vi. 集中 concentrate

　　vt. vi. 聚集于 come together at a focus; adjust an instrument, etc. so that it is in focus

　　vt. vi. 调整焦点或焦距以便看清 adjust to make a clear image

　　同义词

　　n. direction，focal point，focusing，stress

　　v. concenter，concentrate，focalise，focalize

　　反义词

　　v. blear，blur，dim，slur

　　词汇辨析

　　concentrate，focus

　　这两个动词均有 集中，聚集 之意。

　　concentrate 指把人或物集中在一起，也可指把精力或注意力集中于某一事物上。

　　focus 侧重指把光、热、射线等集中于一点，也可指把思想或精力等集中于某人或某事情上。

　　参考例句

　　1. If you focus the suns rays on dry wood with a burning-glass, it will start burning.

　　如果你用取火镜使太阳光线聚焦在干木头上，木头就会燃烧起来。

　　2. I should focus more.

　　我应该集中更多。

　　3. We must focus on ourselves and respect the opponent.

　　我们必须集中注意力，同时要尊重对手。

　　双语释义

　　1.V-T/V-I If you focus on a particular topic or if your attention is focused on it, you concentrate on it and think about it, discuss it, or deal with it, rather than dealing with other topics. 关注

　　例：The research effort has focused on tracing the effects of growing levels of five compounds.

　　研究集中跟踪5种化合物水平上升带来的影响。

　　例：Today he was able to focus his message exclusively on the economy.

　　今天他能够将重点聚焦在经济方面。

　　2.V-T/V-I If you focus your eyes or if your eyes focus, your eyes adjust so that you can clearly see the thing that you want to look at. If you focus a camera, telescope, or other instrument, you adjust it so that you can see clearly through it. 使 对焦; 聚焦

　　例：Kelly couldnt focus his eyes well enough to tell if the figure was male or female.

　　凯利无法看清那个人影是男的还是女的。

　　例：His eyes slowly began to focus on what looked like a small dark ball.

　　他的眼睛开始慢慢聚焦到那个小黑球似的东西上。

　　3.V-T If you focus rays of light on a particular point, you pass them through a lens or reflect them from a mirror so that they meet at that point. 把 聚焦

　　例：Magnetic coils focus the electron beams into fine spots.

　　磁线圈将电子束聚焦成细小的点。

　　4.N-COUNT Thefocus of something is the main topic or main thing that it is concerned with. 焦点

　　例：The UNs role in promoting peace is increasingly the focus of international attention.

　　联合国在促进和平方面的作用越来越成为国际关注的焦点。

　　例：The new system is the focus of controversy.

　　新系统是争议的焦点。

　　5.N-COUNT Your focus on something is the special attention that you pay it. 关注

　　例：He said his sudden focus on foreign policy was not motivated by presidential politics.

　　他说他突然关注外交政策并不是受总统政治的驱使。

　　6.N-UNCOUNT If you say that something has a focus, you mean that you can see a purpose in it. 诉求点

　　例：Somehow, though, their latest CD has a focus that the others have lacked.

　　但是，不管怎么说，他们的最新激光唱片具备别人没有的诉求点。

　　7.N-UNCOUNT You use focus to refer to the fact of adjusting your eyes or a camera, telescope, or other instrument, and to the degree to which you can see clearly. 焦点; 对焦

　　例：His focus switched to the little white ball.

　　他的焦点转移到了那个小白球上。

　　8.PHRASE If an image or a camera, telescope, or other instrument is in focus, the edges of what you see are clear and sharp. 清晰; 对准焦点

　　例：Pictures should be in focus, with realistic colours and well composed groups.

　　照片应该成像清晰，色彩逼真，构图合理。

　　9.PHRASE If something is in focus, it is being discussed or its purpose and nature are clear. 受关注

　　例：We want to keep the real issues in focus.

　　我们要让真正的问题受到关注。

　　10.PHRASE If an image or a camera, telescope, or other instrument is out of focus, the edges of what you see are unclear. 模糊; 对焦不准

　　例：In some of the pictures the subjects are out of focus while the background is sharp.

　　在一些照片中，主体对焦不准，背景反而很清晰。

　　常见用法

　　用作名词

　　He always wants to be the focus of attention.

　　他总想成为注意力的焦点。

　　He took out the binoculars and adjusted the focus.

　　他取出双筒望远镜并调整了焦距。

　　The main focus of this manual is the management of fresh ground water resources.

　　本指南的主要中心是地下淡水资源的管理。

　　用作动词

　　The noise made it hard for me to focus on work.

　　噪音让我无法集中注意力工作。

　　He focused the suns rays on the paper with a burning glass.

　　他用取火镜使太阳光聚集在纸上。