| 单词 | twenty-twenty |
| 释义 | twenty-twenty From Longman Dictionary of Contemporary Englishtwenty-twentyˌtwenty-ˈtwenty, 20/20 noun [uncountable]1 → twenty-twenty vision2 → twenty-twenty hindsightOrigin 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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