1.(使)集中，(使)聚集
2.调整(镜头，眼睛)焦点[焦距]以便看清
n.
1.【物理】焦点；【光学】(镜头的)焦点，焦距；聚焦，对焦点，对光；成像清晰点
2.(活动、注意力、兴趣等的)中心，重点，集中点
3.【医学】(病)灶；疫源地
4.【数学】 1). (椭圆的)焦点；2). (抛物线或双曲线的)螺线极点
及物动词：
1.集中（光束于）；聚焦（于）
2.中心点（指人或事物）
3.（眼睛或镜头的）焦距，调焦
4.（光、声等的）焦点，中心点，源
5.（地震的）震源
不及物动词：
1.集中 词形变化
- 名称 focuser
- 时态 focused，focussed，focusing，focussing，focuses，focusses
- 复数 focuses，foci
- 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。
- cause to converge on or toward a central point
- special emphasis attached to something
- a fixed reference point on the concave side of a conic section
- a point of convergence of light (or other radiation) or a point from which it diverges
- a central point or locus of an infection in an organism
- maximum clarity or distinctness of an image rendered by an optical system
- direct one‘s attention on something
- bring into focus or alignment; to converge or cause to converge; of ideas or emotions
- put (an image) into focus
- maximum clarity or distinctness of an idea
- the concentration of attention or energy on something
- become focussed or come into focus