英汉词典

focus 基本解释

• n. 焦点；中心；清晰；焦距
• vt. 使集中；使聚焦
• vi. 集中；聚焦；调节焦距
• n. (Focus)人名；(瑞典)福库斯

focus 词态变化

focus 中文词源

来自拉丁语focus, 火炉，引申词义家，集中点。在1604年德国数学家Johannes Kepler用该词来指数学意义上的聚焦。进一步可能来自PIE*bhe, 照明，发光，词源同beacon.

focus 英文词源

focus

focus: [17] Latin focus meant ‘fireplace’, and in post-classical times it came to be used for ‘fire’ itself – hence French feu, Italian fuoco, Spanish fuego, all meaning ‘fire’, and hence too the English derivatives fuel and fusillade. The first writer known to have used it in its modern sense ‘point of convergence’ was the German astronomer Johannes Kepler, in 1604, but the reason for his choice of word is not clear.

It may have been some metaphorical notion of the ‘hearth’ symbolizing the ‘centre of the home’, but it has also been suggested that it may have been preceded and inspired by the use of focus for the ‘burning point’ of a mirror (not actually recorded until somewhat later). The philosopher Thomas Hobbes appears to have introduced the term into English, in 1656. A medieval Latin derivative of focus was focārius, from which French got foyer ‘hearth, home’, borrowed by English in the 19th century for a public entrance hall or lobby.
=> foyer, fuel, fusillade

focus (n.)

1640s, "point of convergence," from Latin focus "hearth, fireplace" (also, figuratively, "home, family"), which is of unknown origin. Used in post-classical times for "fire" itself; taken by Kepler (1604) in a mathematical sense for "point of convergence," perhaps on analogy of the burning point of a lens (the purely optical sense of the word may have existed before Kepler, but it is not recorded). Introduced into English 1650s by Hobbes. Sense transfer to "center of activity or energy" is first recorded 1796.

focus (v.)

1775 in optics, "bring into focus" (transitive); 1807 in the figurative sense, from focus (n.). Intransitive use by 1864, originally in photography. Related: Focused; focusing; less commonly focussed; focussing.

focus 英文释义

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

focus 同义词解析

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。

focus 双语例句

1. In the background, in soft focus, we see his smiling wife.

在背景部分，我们可以看到他妻子面带微笑的蒙影像。

来自柯林斯例句

2. Their talks are expected to focus on arms control.

他们的会谈预计会集中讨论军备控制问题。

来自柯林斯例句

3. These issues were brought into sharp focus by the Gulf crisis.

海湾危机让这些问题备受关注。

来自柯林斯例句

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

今天他得以将主题全部集中在经济方面。

来自柯林斯例句

5. They focus on overt discrimination rather than insidious aspects of racism.

他们关注的是公开的歧视，而不是种族主义的一些潜在问题。

来自柯林斯例句

focus 实用场景例句

Let your eyes focus on objects that are further away from you.

睁大眼睛看清楚离你较远的物体。

牛津词典

It took a few moments for her eyes to focus in the dark.

过了好几分钟她的眼睛才适应了黑暗。

牛津词典

In this scene, the camera focuses on the actor's face.

在这个镜头中，摄影机对准演员的脸部。

牛津词典

He focused his blue eyes on her.

他那蓝色的眼睛注视着她。

牛津词典

I quickly focused the camera on the children.

我迅速把照相机的镜头对准孩子们。

牛津词典

It was the main focus of attention at the meeting.

这是会议上关注的主要焦点。

牛津词典

His comments provided a focus for debate.

他的评论提供了辩论的重点。

牛津词典

The visit helped to focus world attention on the plight of the refugees.

这次访问促使全世界关注难民困境。

牛津词典

Each exercise focuses on a different grammar point.

每个练习各有不同的语法重点。

牛津词典

The discussion focused on three main problems.

讨论集中在三个主要问题上。

牛津词典

...a lot of out-of-focus photographs.

许多对焦不实的照片

柯林斯高阶英语词典

The deficit in the US balance of payments put these considerations out of focus...

美国的国际收支逆差使这些因素没有得到关注。

柯林斯高阶英语词典

The movement towards democracy in Latin America and the foreign debt problems that have plagued it have gone out of focus.

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。

柯林斯高阶英语词典

In some of the pictures the subjects are out of focus 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。

柯林斯高阶英语词典

His eyes slowly began to focus 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。

柯林斯高阶英语词典

His focus switched to the little white ball...

他把关注点转移到那个小白球上。

柯林斯高阶英语词典

Together these factors determine the depth of focus...

这些因素综合起来决定了景深。

柯林斯高阶英语词典

Magnetic coils focus the electron beams into fine spots.

磁线圈把电子束聚焦成微小的点。

柯林斯高阶英语词典

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

照片应该图像清晰，颜色逼真，构图合理。

柯林斯高阶英语词典

This aggression is the real issue the world should be concerned about. We want to keep that in focus...

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。

柯林斯高阶英语词典

These issues were brought into sharp focus by the Gulf crisis.

海湾危机让这些问题备受关注。

柯林斯高阶英语词典

Kelly couldn't focus 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。

柯林斯高阶英语词典

Somehow, though, their latest album has a focus 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。

柯林斯高阶英语词典

Suddenly all of the bizarre and seemingly isolated examples took on a meaningful focus.

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。

柯林斯高阶英语词典

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。

柯林斯高阶英语词典

He is currently focusing on assessment and development...

他目前在关注评估和发展。

柯林斯高阶英语词典

The UN's 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受到国际社会的关注。

柯林斯高阶英语词典

The new system is the focus of controversy...

这个新体制是争议的焦点。

柯林斯高阶英语词典

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非受总统政治的驱使。

柯林斯高阶英语词典

The report's focus 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。

柯林斯高阶英语词典