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twenty-twenty

/ˌtwen.ti ˈtwen.ti/

翻译: 名词,指正常的视力,以能在20英尺(约6米)距离阅读标准视力表来衡量。

1 个条目

noun

/ˌtwen.ti ˈtwen.ti/B2formal
  • zh名词,指正常的视力,以能在20英尺(约6米)距离阅读标准视力表来衡量。

A noun referring to normal visual acuity, measured by the ability to read standard eye charts from a distance of 20 feet.

不可数

  1. Normal visual acuityB2formal

    A standard measure of visual clarity, indicating the ability to see at 20 feet what a person with normal vision can see at that distance.

    zh正常视力

    • The eye exam showed that she has twenty-twenty vision.
    • He was proud of his twenty-twenty eyesight.
    • Pilots are required to have twenty-twenty vision.
词形
  • twenty-twenties plural form
  • twenty-twenties' possessive plural form
  • twenty-twenty's possessive singular form