1. in focus : 焦点对准；
2. out of focus : 焦点没对准的, 模糊不清的；
及物动词
1. This photograph looks funny; I think you forgot to focus the camera.
这张照片看上去有些滑稽，我想你是忘了给照相机调焦距了。
2. focus
2. You can focus your telescope on that distant television tower.
你可以对着那座远方的电视塔调节望远镜的镜头。
不及物动词
1. focus的反义词
1. A defect of vision prevented him from focusing accurately.
视力上的缺陷使他不能准确对焦。
名词
1. The focus of this chapter is the American Revolution.
本章的重点是讲美国独立战争。
2. She always wants to be the focus of attention.
她老想成为人们注意的中心。
3. He took out the binoculars and adjusted the focus.
他取出双筒望远镜并调整了焦距。
1. 焦距：PART 1 数码相机剖析篇 单元1 像素点(pixel) 单元2 拍摄尺寸 (分辨率) 单元3 感光组件--CCD VS CMOS 单元4 光圈(Aperture) 单元5 快门(Shutter) 单元6 焦距(Focus) --定焦与变焦 单元7 对焦模式 单元8 测光模式 单元9 感光
2. 专一化：企业成功的三种基本战略, 有三种提供成功机会的基本战略方法,可能使公司成为同行中的佼佼者: 总成本领先(overall cost leadership)战略 差异化(differentiation)战略 专一化(focus)战略 有时公司可能成功地寻求一种以上的方法作为其基本目标,
3. focus：fiber optic connection universal system; 光纤连接通用系统
4. focus：federation on computing in the united state; 美国计算联盟（国际信息处理联合会属下）
Promotional Activities-(促销活动)
A：As you know, the FastTrek 2000 is due for release next month. I think we've finally worked the kinks out.
正如你所知，FastTrek 2000 预定在下个月推出。我想我们已经解决了所有琐碎的问题。
B：Great. That's vital. Quality is the focus of the ad campaign. The boards must work well if they're going to be the cash cow we want them to be.
太好了。那很重要。品质是广告活动的焦点。如果要让这些适配卡如我们所要的成为摇钱树的话，就不能出乱子。
A：Let's go over our promotion plans again.
我们再看一遍我们的促销计划。
B：OK. We have six major retailers running demonstrations at most branches. And our exhibition team is already on the road setting up for computer shows.
我们有六家主要的零售商在大部分的分店做展示。而且我们的展示队伍已经为计算机展在起跑了。
A：Good. What about print and radio?
很好，那印刷品和广播呢？
B：We've taken out full-page ads for two large trade magazines. And more important, our press releases have been well received.
我们在两家大的商业杂志刊登了全版广告。更重要的是，我们的新闻稿已经全被采纳了。
A：Any larger ads?
有再大一点的广告吗？
B：Yes. We're putting the same full-page ad in the Sunday edition of three major newspapers.
有的。我们在三大报的星期天版面放了相同的全版广告。
A：Sounds perfect.
听起来很周全。
B：But nothing ever works out as you want it. So I have a number of other tricks up my sleeve, as well.
不过有时候就是会事与愿违，所以我还有很多其它的妙计。