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单词 twenty-twenty
释义

twenty-twenty

Word family nountwentiestwentyfoldtwenty-onetwentyadjectivetwentiethtwentyishtwenty-twenty
ˌtwenty-ˈtwenty, 20/20 noun [uncountableU]  
1 twenty-twenty vision SEEthe ability to see things normally, without needing glasses 极好的视力;正常视力
 A pilot must have twenty-twenty vision.
飞行员必须具有极好的视力。
2. twenty-twenty hindsight used to say that it is easy to know what you should have done in a situation after it has happened, but you did not know what to do earlier 事后聪明,后见之明
Origin twenty-twenty
(1800-1900) From normal sight being judged on the ability to read letters at a distance of 20 feet
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更新时间:2025/8/4 14:44:52