focus

詳細解釋：

fo.cus

n.（名詞）
【複數】 fo.cus.es 或 fo.ci [-so., -ko.]

A point at which rays of light or other radiation converge or from which they appear to diverge, as after refraction or reflection in an optical system:
焦點：幾條光線或其他射線相交的一點，或在一個光學系統中經折射或反射後呈發散狀的光線的出發點：
例句：
the focus of a lens.Also called focal point
透鏡的焦點也作 focal point

See focal length
參見 focal length

The distinctness or clarity of an image rendered by an optical system.
影象的清晰度：因使用光學調節系統而形成的分明的或清晰的圖象
The state of maximum distinctness or clarity of such an image:
最大清晰度：此種圖象最好的區分或清晰狀態：
例句：
in focus; out of focus.
清晰；不清晰

An apparatus used to adjust the focal length of an optical system in order to make an image distinct or clear:
對焦儀器：為使其圖象明顯或清晰用於調節光學系統焦距的儀器：
例句：
a camera with automatic focus.
自動對焦的照相機

A center of interest or activity.See Synonyms at center
中心：興趣或活動的中心參見 center
Close or narrow attention; concentration:
密切或嚴密的注意；集中：
例句：
.He was forever taken aback by[New York`s] pervasive atmosphere of purposefulness—the tight focus of its drivers, the brisk intensity of its pedestrians. (Anne Tyler)
.他久久地驚詫於［紐約］ 所瀰漫的那種目的性很強的氣氛——司機們的高度集中以及行人的步伐緊湊快速. (安妮·泰勒)

A condition in which something can be clearly apprehended or perceived:
可清楚明白的狀況：某事物可被清晰理解或感覺的狀況：
例句：
couldn`t get the problem into focus.
不能很清楚地理解這個問題

Pathology The region of a localized bodily infection or disease.
【病理學】 病症：疾病集中或感染的主要部位
Geology The point of origin of an earthquake.
【地質學】 震中：地震的發源地
Mathematics A fixed point whose relationship with a directrix determines a conic section.
【數學】 焦點：一個與準線的關係決定圓錐形狀的定點
v.（動詞）
fo.cused 或 fo.cussed fo.cus.ing 或 fo.cus.sing fo.cus.es 或 fo.cus.ses
v.tr.（及物動詞）
To cause (light rays, for example) to converge on or toward a central point; concentrate.
使集中，使聚合：使（如光線）集中在一中心點或向中心點集中；集中

To render (an object or image) in clear outline or sharp detail by adjustment of one`s vision or an optical device; bring into focus.
使集中於焦點：通過調節視力或光學儀器使（一物體或圖象）外緣清晰或細節分明；調焦
To adjust (a lens, for example) to produce a clear image.
調焦：調整（如透鏡）而得到清晰圖象
To direct toward a particular point or purpose:
集中：導向一特定點或目的：
例句：
focused all their attention on finding a solution to the problem.
集中全部注意力尋找解決問題的辦法

v.intr.（不及物動詞）
To converge on or toward a central point of focus; be focused.
集中於焦點：在中心焦點或向中心焦點集中；被集聚
To adjust one`s vision or an optical device so as to render a clear, distinct image.
調焦：調整視力或光學儀器以使圖象鮮明清晰
To concentrate attention or energy:
集中：集中注意力或能力：
例句：
a campaign that focused on economic issues.
一次集中解決經濟問題的運動

來源：
Latin [hearth]
拉丁語 [火爐]

【引伸】
fo.cuser
n.（名詞）