twenty-twenty

twen ty-twen ty (also 20 /20 ) ▶adjective denoting vision of normal sharpness. ORIGIN the Snellen fraction for normal visual acuity (see Snellen test ).

twenty-twenty

twenty-twenty (also 20 /20 ) ▶adjective denoting vision of normal sharpness. ORIGIN the Snellen fraction for normal visual acuity (see Snellen test ).

twenty-twenty

tw è nty-tw é nty 20 /20 形容詞 正常な視力の ; 洞察力のある ▸ twenty-twenty hindsight 鋭い後知恵 (!事の後ならもっともらしいことが容易に言えるの意 ) .～̀ v í sion 正常な視力 .