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词汇 varifocal
释义

varifocal

adjective
/ˈveərɪfəʊkl/
/ˈverɪfəʊkl/
[only before noun]
  1. varifocal glasses have lenses which vary in how thick they are from the upper part to the lower part. The upper part is for looking at things at a distance, and the lower part is for looking at things that are close to you.渐进多焦镜(镜片由上至下用于看远、近距离的东西)
    • varifocal lenses变焦距的...
    compare bifocal
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