单词 | twenty-twenty |
释义 | twenty-twenty(also 20/20) adjective Denoting vision of normal sharpness.‘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.’...
OriginLate 19th century: the Snellen fraction for normal visual acuity (see Snellen test). Rhymes |
随便看 |
|
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。