focuses

基本解释

focus用作名词时原始意义是“火炉”,引申为“焦点”,转化为动词则为“(使)聚焦”,“(使)集中”。即“调整…的焦点或焦距以便看清”,引申则表示“使(注意力等)集中于某物”。
focus用作及物动词时,可以接望远镜、焦点等作宾语,也可以接阳光等作宾语,还可以接目光等作宾语。focus用于比喻作“致力于”解时,则可以接mind, attention等作宾语。
focus也用作不及物动词,这时常和介词on连用,表示“聚焦于…”“致力于…”等。
focus on sth表示“集中于某事”；
focus作“中心，焦点”的解释时，用词范围很广，常被滥用，需注意。

If you focus on a particular topic or if your attention is focused on it, you concentrate on it and think about it, discuss it, or deal with it, rather than dealing with other topics.
If you focus your eyes or if your eyes focus, your eyes adjust so that you can clearly see the thing that you want to look at. If you focus a camera, telescope, or other instrument, you adjust it so that you can see clearly through it.
If you focus rays of light on a particular point, you pass them through a lens or reflect them from a mirror so that they meet at that point.
Thefocus of something is the main topic or main thing that it is concerned with.
Your focus on something is the special attention that you pay it.
If you say that something has a focus, you mean that you can see a purpose in it.
You use focus to refer to the fact of adjusting your eyes or a camera, telescope, or other instrument, and to the degree to which you can see clearly.
If an image or a camera, telescope, or other instrument is in focus, the edges of what you see are clear and sharp.
If something is in focus, it is being discussed or its purpose and nature are clear.
If an image or a camera, telescope, or other instrument is out of focus, the edges of what you see are unclear.