focus

n. 焦点, 焦距
vi. 聚焦, 注视
vt. 使聚焦, 调焦, 集中
【计】 焦点
【化】 焦点
【医】 焦点, 聚光点; 灶; 疫源地
相关词组:
focus on...
in focus
out of focus

名词复数:focuses 名词:focuser 动词过去式:focused,focussed 过去分词:focused,focussed 现在分词:focusing,focussing 第三人称单数:focuses,focusses 

fo.cus

n.（名词）
【复数】 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:
焦点：几条光线或其他射线相交的一点，或在一个光学系统中经折射或反射后呈发散状的光线的出发点：
例句：
the focus of a lens.Also called focal point
透镜的焦点也作 focal point

See focal length
参见 focal length


The distinctness or clarity of an image rendered by an optical system.
影象的清晰度：因使用光学调节系统而形成的分明的或清晰的图象
The state of maximum distinctness or clarity of such an image:
最大清晰度：此种图象最好的区分或清晰状态：
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:
对焦仪器：为使其图象明显或清晰用于调节光学系统焦距的仪器：
例句：
a camera with automatic focus.
自动对焦的照相机

A center of interest or activity.See Synonyms at center
中心：兴趣或活动的中心参见 center
Close or narrow attention; concentration:
密切或严密的注意；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)
.他久久地惊诧于［纽约］ 所弥漫的那种目的性很强的气氛——司机们的高度集中以及行人的步伐紧凑快速. (安妮·泰勒)

A condition in which something can be clearly apprehended or perceived:
可清楚明白的状况：某事物可被清晰理解或感觉的状况：
例句：
couldn`t get the problem into focus.
不能很清楚地理解这个问题

Pathology The region of a localized bodily infection or disease.
【病理学】 病症：疾病集中或感染的主要部位
Geology The point of origin of an earthquake.
【地质学】 震中：地震的发源地
Mathematics A fixed point whose relationship with a directrix determines a conic section.
【数学】 焦点：一个与准线的关系决定圆锥形状的定点
v.（动词）
fo.cused 或 fo.cussed fo.cus.ing 或 fo.cus.sing fo.cus.es 或 fo.cus.ses
v.tr.（及物动词）
To cause (light rays, for example) to converge on or toward a central point; concentrate.
使集中，使聚合：使（如光线）集中在一中心点或向中心点集中；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.
使集中于焦点：通过调节视力或光学仪器使（一物体或图象）外缘清晰或细节分明；调焦
To adjust (a lens, for example) to produce a clear image.
调焦：调整（如透镜）而得到清晰图象
To direct toward a particular point or purpose:
集中：导向一特定点或目的：
例句：
focused all their attention on finding a solution to the problem.
集中全部注意力寻找解决问题的办法

v.intr.（不及物动词）
To converge on or toward a central point of focus; be focused.
集中于焦点：在中心焦点或向中心焦点集中；被集聚
To adjust one`s vision or an optical device so as to render a clear, distinct image.
调焦：调整视力或光学仪器以使图象鲜明清晰
To concentrate attention or energy:
集中：集中注意力或能力：
例句：
a campaign that focused on economic issues.
一次集中解决经济问题的运动


来源：
Latin [hearth]
拉丁语 [火炉]

【引伸】
fo.cuser
n.（名词）