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twenty-twenty vision

noun
🔊/ˌtwenti ˌtwenti ˈvɪʒn/
🔊/ˌtwenti ˌtwenti ˈvɪʒn/
(also 20/20 vision)
[uncountable]
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  1. the ability to see perfectly绝好的视力
    • You need twenty-twenty vision for this job.您需要这份二十二的远见。