прилагательное то же, что и 20/20 нормальный (о зрении) Например: twenty-twenty vision — идеальное зрение, "единица"
or 20/20 adjective Etymology: from the testing of vision by reading letters at a distance of 20 feet 1. of the human eye meeting a standard of normal visual acuity Example: twenty-twenty vision 2. marked by facilely accurate discernment, judgment, or assessment Example: hindsight is twenty-twenty