focus过去式

1. （活动、注意力、兴趣等的）焦点，中心，重点，集中点
2. 【地震学】震源
3. 【物】焦点
4. 【光】聚焦，对光；对焦点，聚光点，成像清晰点
5. 【光】（镜头的）焦点，焦距
6. 清晰，明确
7. 【医】病灶
8. 【数】（椭圆的）焦点

1. 集中，使集中于一点
2. 使聚焦，使集中于焦点，特别关注
3. 调焦，调（眼睛、镜头等的）焦距，定…的焦点；使（眼睛）注视
4. 于小区域
5. 使清晰
6. 聚焦，集中于焦点，注视

1. the concentration of attention or energy on something;

   "the focus of activity shifted to molecular biology"
   "he had no direction in his life"
   

2. maximum clarity or distinctness of an image rendered by an optical system;

   "in focus"
   "out of focus"
   

3. maximum clarity or distinctness of an idea;

   "the controversy brought clearly into focus an important difference of opinion"
   

4. a central point or locus of an infection in an organism;

   "the focus of infection"
   

5. special emphasis attached to something;

   "the stress was more on accuracy than on speed"
   

6. a point of convergence of light (or other radiation) or a point from which it diverges
7. a fixed reference point on the concave side of a conic section

1. direct one's attention on something;

   "Please focus on your studies and not on your hobbies"
   

2. cause to converge on or toward a central point;

   "Focus the light on this image"
   

3. bring into focus or alignment; to converge or cause to converge; of ideas or emotions
4. become focussed or come into focus;

   "The light focused"
   

5. put (an image) into focus;

   "Please focus the image; we cannot enjoy the movie"
   

1.集中(注意力);关注
If youfocuson a particular topic or if your attentionis focusedon it, you concentrate on it and think about it, discuss it, or deal with it, rather than dealing with other topics.

e.g. The research effort has focused on tracing the effects of growing levels of five compounds...
研究重点追踪了5种化合物含量上升的影响。
e.g. He is currently focusing on assessment and development...
他目前在关注评估和发展。

2.主题;重点;焦点
Thefocus of something is the main topic or main thing that it is concerned with.

e.g. The UN's role in promoting peace is increasingly thefocus of international attention...
联合国在促进和平方面的作用越来越受到国际社会的关注。
e.g. The new system is thefocus of controversy...
这个新是争议的焦点。

3.关注;注意
Yourfocus on something is the special attention that you pay it.

focus的反义词

e.g. He said his suddenfocus on foreign policy was not motivated by presidential politics...
他说他突然关注外交并非受总统政治的驱使。
e.g. The report'sfocus is on how technology affects human life rather than business...
这个报告关注的是技术如何影响人类生活而非商业活动。

4.目的;意图;含义
If you say that something has afocus, you mean that you can see a purpose in it.

e.g. Somehow, though, their latest album has afocus that the others have lacked...
但是，他们的最新专辑设法找到了其他专辑所欠缺的一种目的性。
e.g. Suddenly all of the bizarre and seemingly isolated examples took on a meaningfulfocus.
突然之间，所有那些怪异且看上去孤立的例子都具有了意义。

5.注视;使(相机、望远镜等)聚焦;给…调焦
If youfocus your eyes or if your eyesfocus, your eyes adjust so that you can clearly see the thing that you want to look at. If youfocus a camera, telescope, or other instrument, you adjust it so that you can see clearly through it.

e.g. Kelly couldn'tfocus his eyes well enough to tell if the figure was male or female...
凯利没有看清楚那个人影到底是男的还是女的。
e.g. His eyes slowly began tofocus on what looked like a small dark ball...
他的眼睛慢慢开始看清楚那个看上去像是个小黑球的东西。

6.注视;调焦;对焦
You usefocus 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.

e.g. Hisfocus switched to the little white ball...
他把关注点转移到那个小白球上。
e.g. Together these factors determine the depth offocus...
这些因素综合起来决定了景深。

7.集中(光束);聚焦
If youfocus 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.

e.g. Magnetic coilsfocus the electron beams into fine spots.
磁线圈把电子束聚焦成微小的点。

8.聚焦点
Thefocus of a number of rays or lines is the point at which they meet.

9.(图像)清晰;(照相机、望远镜等)对准焦点
If an image or a camera, telescope, or other instrument isin focus, the edges of what you see are clear and sharp.

e.g. Pictures should be infocus, with realistic colours and well composed groups.
照片应该图像清晰，颜色逼真，构图合理。

10.受关注;在讨论;(目的和性质)清楚的，明白的
If something isin focus, it is being discussed or its purpose and nature are clear.

e.g. This aggression is the real issue the world should be concerned about. We want to keep that infocus...
这次侵略才是世界应该关注的真正问题。我们想继续保持关注。
e.g. These issues were brought into sharpfocus by the Gulf crisis.
海湾危机让这些问题备受关注。

11.焦点没对准;脱焦;失焦
If an image or a camera, telescope, or other instrument isout of focus, the edges of what you see are unclear.

focus是什么意思

e.g. In some of the pictures the subjects are out offocus while the background is sharp.
一些照片背景很清晰，被摄主体却因失焦而显得模糊。
e.g. ...a lot of out-of-focus photographs.
许多对焦不实的照片

12.不受关注;(目的和性质)不清晰的
If something isout of focus, it is not being discussed or its purpose or nature is not clear.

e.g. The deficit in the US balance of payments put these considerations out offocus...
美国的国际收支逆差使这些因素没有得到关注。
e.g. The movement towards democracy in Latin America and the foreign debt problems that have plagued it have gone out offocus.
拉丁美洲的民主运动和困扰该地区的外债问题已经淡出人们的视线。

• focus one's attention集中注意力
• focus one's efforts集中精力
• focus the lens of a microscope调节显微镜的镜片
• focus one's thoughts集中思想

• focus accurately准确地调节
• focus properly调整

• focus on〔upon〕使集中于焦点,使集中在…上; 强调,着重
• focus on the interaction between着重说明…之间的相互作用
• focus on a problem集中在某个问题上
• focus the camera on把照相机的焦点对准…
• focus the sun's rays on使阳光聚焦于…

• adjust the focus调整焦点
• take the focus量焦点

• real focus实焦点
• right focus正确的焦点

• in focus对准焦距
• out of focus没对准焦距

• the focus of sth某物的中心

• The orbit of a planet..is a broad ellipse in which the sun is..at one focus.

  出自：J. Bronowski

• I raised the beam of my flashlight.., I focused it..on the hole in the yellow ceiling.

  出自：R. Bradbury

• Guy tilted forward his glasses and tried to focus the spectacle before him.

  出自：O. Manning

• He took a little time to focus his eyes properly and decide who I was.

  出自：C. Achebe

• Electrons can be focussed into narrow beams by electrostatic or magnetic lenses.

  出自：H. M. Rosenberg

• I focused much of my distemper on London: I noticed only its bad qualities.

  出自：C. Priest

• ☆ 17世纪40年代进入英语，直接源自古典拉丁语的focus，意为炉床，壁炉。