Definición de twenty-twenty en inglés:

twenty-twenty

Silabificación: twen·ty-twen·ty
(also 20/20)

adjetivo

Denoting vision of normal sharpness.
Más ejemplos en oraciones
  • ‘I took you to the optometrist and she said that you had perfect twenty-twenty vision… I don't understand machines these days… ‘she mumbled to herself and walked back out.’
  • They slowly faded into the lenses, leaving only crystalline images, better than twenty-twenty vision.
  • For example we could make sure they had something as simple as twenty-twenty vision, or something as complicated as great strength.

Origen

the Snellen fraction for normal visual acuity (see Snellen test).

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