Word · CEFR B2 · Frequency #1918
focus
专注；注意力集中
Concentration of attention or energy on something.
- 1.
A point at which reflected or refracted rays of light converge.
反射或折射光线汇聚的点。
- 2.
the concentration of attention or energy on something
注意力或精力的集中
- 3.
A point of a conic at which rays reflected from a curve or surface converge.
圆锥曲线上反射光线汇聚的点。
- 4.
maximum clarity or distinctness of an image rendered by an optical system
光学系统所成图像的最大清晰度
- 5.
The fact of the convergence of light on the photographic medium.
光线在感光介质上汇聚的事实。
- 6.
maximum clarity or distinctness of an idea
思想的最大清晰度或明晰度
- 7.
The quality of the convergence of light on the photographic medium.
光线在感光介质上汇聚的质量。
- 8.
Concentration of attention.
注意力的集中。
- 9.
Something to which activity, attention or interest is primarily directed.
活动、注意力或兴趣的主要指向对象。
- 10.
The exact point of where an earthquake occurs, in three dimensions (underneath the epicentre).
地震发生的精确三维位置(震中正下方)。
- 11.
The status of being the currently active element in a user interface, often indicated by a visual highlight.
用户界面中当前活动元素的状态,通常以视觉高亮显示。
- 12.
The most important word or phrase in a sentence or passage, or the one that imparts information.
句子或段落中最重要的词或短语,即传达信息的那个。
- 13.
An object used in casting a magic spell.
施法时使用的物品。
- 14.
The centre of an older fish's scale, which is the point where a younger fish's scale starts to grow from.
鱼鳞的中心,是幼鱼鳞片开始生长的部位。
重点；中心；焦点；对焦；清晰度；明确；清晰；震源
In use
She lost her focus during the long meeting.
The photographer adjusted the focus of the camera.
The main focus of the article was climate change.
the focus of activity shifted to molecular biology
in focus
out of focus
the controversy brought clearly into focus an important difference of opinion
Connections
Collocations
- focus of attention
- 关注的焦点
- The environment is the main focus of attention at the conference.环境是会议关注的主要焦点。
- main focus
- 主要焦点
- The main focus of the report is climate change.报告的主要焦点是气候变化。
- bring into focus
- 使清晰/聚焦
- The camera lens can bring the image into focus.相机镜头可以使图像聚焦。
- out of focus
- 模糊不清
- The photo is blurry because it is out of focus.这张照片模糊不清，因为失焦了。
- shift focus
- 转移焦点
- We need to shift our focus to customer service.我们需要把焦点转移到客户服务上。
Idioms & figurative uses
Learner notes
Memory Tip
想象一束光线汇聚于一点，这个点就是focus（焦点）。
Context & Register
名词'focus'通常表示注意力集中或图像清晰度，常见于日常对话、学术写作和技术领域（如摄影）。
Grammar Note
常与介词on或of搭配使用
Pronunciation & Spelling
Only 'locus' rhymes with 'focus' (same stressed vowel and ending). 'Cactus', 'circus', and 'discus' are spelling lookalikes but have different stressed vowels, so they do not rhyme.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 4，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.