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青少儿英语指南    2019-03-05 12:10:14



英音 [ˈfəʊkəs] 美音 [ˈfoʊkəs]


vt.& vi. (使)集中,(使)聚集;调整(镜头,眼睛)焦点[焦距]以便看清;

vt. 调整(眼睛或者镜头的)焦距;集中(光束于);聚焦,注视;集中注意力;

n. 焦点;影象的清晰度;(活动、注意力、兴趣等的)中心;[医]病灶,病症;


  1. the concentration of attention or energy on something;

    "the focus of activity shifted to molecular biology"
    "he had no direction in his life"

  2. maximum clarity or distinctness of an image rendered by an optical system;

    "in focus"
    "out of focus"

  3. maximum clarity or distinctness of an idea;

    "the controversy brought clearly into focus an important difference of opinion"

  4. a central point or locus of an infection in an organism;

    "the focus of infection"

  5. special emphasis attached to something;

    "the stress was more on accuracy than on speed"

  6. a point of convergence of light (or other radiation) or a point from which it diverges

  7. a fixed reference point on the concave side of a conic section

  1. direct one's attention on something;

    "Please focus on your studies and not on your hobbies"

  2. cause to converge on or toward a central point;

    "Focus the light on this image"

  3. bring into focus or alignment; to converge or cause to converge; of ideas or emotions

  4. become focussed or come into focus;

    "The light focused"

  5. put (an image) into focus;

    "Please focus the image; we cannot enjoy the movie"

defocus v. 使散焦,使散开;使焦点模糊;