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单词 focusable
释义

WordReference Random House Learner's Dictionary of American English © 2024
fo•cus /ˈfoʊkəs/USA pronunciation   n., pl. -cus•es, -ci /-saɪ, -kaɪ/USA pronunciation   v., -cused, -cus•ing or (esp. Brit.) -cussed, -cus•sing. 

    n. 
    1. a central point, such as of attraction, attention, or activity:[countable]His focus was on earning a living.
    2. Physics[countable] a point at which rays of light, heat, or other radiation meet after being refracted or reflected.
    3. Optics the adjustment of an optical device that is necessary to produce a clear image:[uncountable]The image is in focus.

    v. 
    1. to (cause to) come to a focus or into focus: [+ object]to focus the lens of a camera.[no object]For a few moments my eyes wouldn't focus.
    2. to concentrate: [+ object]I tried to focus my thoughts.[no object* (~ + on + object)]I tried to focus on the project.

    WordReference Random House Unabridged Dictionary of American English © 2024
    fo•cus  (fōkəs),USA pronunciation n., pl. -cus•es, -ci (-sī, -kī),USA pronunciation  v., -cused, -cus•ing or (esp. Brit.) -cussed, -cus•sing. 

      n. 
      1. a central point, as of attraction, attention, or activity:The need to prevent a nuclear war became the focus of all diplomatic efforts.
      2. Physicsa point at which rays of light, heat, or other radiation, meet after being refracted or reflected.
      3. Optics
        • the focal point of a lens.
        • the focal length of a lens.
        • the clear and sharply defined condition of an image.
        • the position of a viewed object or the adjustment of an optical device necessary to produce a clear image:in focus; out of focus.
      4. Mathematics[Geom.](of a conic section) a point having the property that the distances from any point on a curve to it and to a fixed line have a constant ratio for all points on the curve. See diag. under ellipse, hyperbola, parabola. 
      5. Geologythe point of origin of an earthquake.
      6. [Pathol.]the primary center from which a disease develops or in which it localizes.

      v.t. 
      1. to bring to a focus or into focus:to focus the lens of a camera.
      2. to concentrate:to focus one's thoughts.

      v.i. 
      1. to become focused.
      • Latin: fireplace, hearth
      • 1635–45
      focus•a•ble, adj. 
      focus•er, n. 
        • 1.See corresponding entry in Unabridged center, heart, core, nucleus.

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      更新时间:2025/7/3 7:33:30