听声词典

focuses

F 开头单词

基本解释

  • n. 重点（focus的复数）；焦点
  • v. 集中（focus的三单形式）；使聚焦；调节焦距

词源解说

  • 17世纪40年代进入英语，直接源自古典拉丁语的focus，意为炉床，壁炉。

同根派生

     

用法辨析

    v. (动词)

  • 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。

英汉例句

    用作动词 (v.)

    用作不及物动词: S+～(+A)

  • A defect of vision prevented him from focusing accurately.
    视力缺陷使他无法准确聚焦。

    • 用作及物动词: S+～+ n./pron.

  • He focuses the lens of a microscope.
    他调整显微镜的镜片以定焦点。

    • 用作名词 (n.)

  • The camera has two focuses.
    这部相机有两个焦距。

词组短语

    用作动词 (v.)

    ～+名词

  • focus one 's thoughts 集中思想
  • focus the lens of a microscope 调节显微镜的镜片

    • ～+副词

  • focus accurately 准确地调节
  • focus properly 调整

    • ～+介词

  • focus on 集中于
  • focus on the interaction between 着重说明…之间的相互作用
  • focus on a problem 集中在某个问题上

英英字典

    柯林斯英英字典

  • 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.

专业释义

    地球科学

  • 震源

    • 医药科学

  • (病)灶；疫源地

    • 物理学

  • (镜头的)焦点，焦距
  • 聚焦，对焦点，对光；成像清晰点