the concentration of attention or energy on something; "the focus of activity shifted to molecular biology"; "he had no direction in his life" 同义词：focus, focusing, focussing, direction, centering,
a point of convergence of light (or other radiation) or a point from which it diverges 同义词：focus,
a central point or locus of an infection in an organism; "the focus of infection" 同义词：focus, nidus,
例句与用法
1.
The mirror of an astronomical telescope forms at its focal point an image of a star on the axis of the mirror . 天文望远镜把在镜轴上的星体成象在焦点上。
2.
Only the revolution actually taking place, could provide a focal point for their positive support and confidence in the people's victory . 唯有实际发生的革命才能为他们的积极支持提供一个集中的焦点和对人民胜利的信念。
3.
This part is one of the focal points in this essay 本部分是全文的重点之一。
4.
Tag is a major focal point of defining a component 标签是定义一个组件的焦点所在。
5.
Chapter 5 is another focal point of the paper 该章是本文的另一个重点内容。
6.
Octrees algorithms were focal point of the subject 八叉树算法是本课题的研究重点。
7.
Which is still a focal point for the community ，它仍然是社区的一个焦点。
8.
A discussion on focal points to the reform of adult education 浅议成人教育改革的着力点
9.
The third part it is a focal point of this text 第三部分是本文的重点。
10.
The seven focal points of developing the county - based economy 发展县域经济的七大着力点
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