英语词汇twenty-twenty vision怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	twenty-twenty vision
释义	twenty-twenty vision 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。 → twenty-twenty vision at twenty-twenty(1)
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