- (of vision) being of normal acuity: usually written 20/20
| 单词 | twenty-twenty |
| 释义 | WordReference Random House Learner's Dictionary of American English © 2024 ˈtwen•ty-ˈtwen•ty or 20-20, adj. WordReference Random House Unabridged Dictionary of American English © 2024
twen•ty-twen•ty (twen′tē twen′tē, twun′tē twun′tē),USA pronunciation adj.
Collins Concise English Dictionary © HarperCollins Publishers:: twenty-twenty adj
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