20/20 vision
noun/ˌtwenti ˌtwenti ˈvɪʒn/
/ˌtwenti ˌtwenti ˈvɪʒn/
(also twenty-twenty-vision)
[uncountable]- the ability to see clearly from a distance of 20 feet, without using glasses or contact lenses
视力 1.0；视力正常
| 单词 | 20-20-vision |
| 释义 | 20/20 visionnoun/ˌtwenti ˌtwenti ˈvɪʒn/ /ˌtwenti ˌtwenti ˈvɪʒn/ (also twenty-twenty-vision) [uncountable]
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