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

英/ ?twenti ?twenti ?v??(?)n /

美/ ?twenti ?twenti ?v??n /

简明释义

正常视力

网络释义

1
?医〉正常视力
[医]视力正常的 twenty-twenty vision n. 〈医〉正常视力 twentyfold `twentIfEuld adj.；adv.

权威例句

1.
Bigelow directs with power and precision, and the raid at the end on Abbottabad, conducted by Navy SEALs, is twenty-five minutes of dark, green-tinted movement (as seen through night-vision goggles) a methodical, room-by-room exercise of deadly force without parallel in recent movies.
NEWYORKER: Zero Dark Thirty
2.
Bigelow and Fraser shot the sequence twice, accumulating forty hours of footage that was edited down to twenty-five minutes of sepulchral, green-tinted action what you see through night-vision goggles.
NEWYORKER: Dead Reckoning

词源

来自视力测试公式 20/x vision,其中分子 20 即 20 英尺，约为 6 米，人与视力 E 图站立的距离，分母为字体大小鉴别力，如分母为 20，则除数为 1，即正常视力，如分母为 10，则除数为 2，视力好于正常视力的人一倍，如分母为 40，则除数为 0.5，较差视力。鉴于现代社会近视眼越来越多，所以由正常视力引申词义极好的视力。

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单词	twenty-twenty vision
释义	twenty-twenty vision 英/ ?twenti ?twenti ?v??(?)n / 美/ ?twenti ?twenti ?v??n / 简明释义正常视力网络释义 1 ?医〉正常视力 [医]视力正常的 twenty-twenty vision n. 〈医〉正常视力 twentyfold `twentIfEuld adj.；adv. 权威例句 1. Bigelow directs with power and precision, and the raid at the end on Abbottabad, conducted by Navy SEALs, is twenty-five minutes of dark, green-tinted movement (as seen through night-vision goggles) a methodical, room-by-room exercise of deadly force without parallel in recent movies. NEWYORKER: Zero Dark Thirty 2. Bigelow and Fraser shot the sequence twice, accumulating forty hours of footage that was edited down to twenty-five minutes of sepulchral, green-tinted action what you see through night-vision goggles. NEWYORKER: Dead Reckoning 词源 1 twenty-twenty vision:正常视力，极好的视力来自视力测试公式 20/x vision,其中分子 20 即 20 英尺，约为 6 米，人与视力 E 图站立的距离，分母为字体大小鉴别力，如分母为 20，则除数为 1，即正常视力，如分母为 10，则除数为 2，视力好于正常视力的人一倍，如分母为 40，则除数为 0.5，较差视力。鉴于现代社会近视眼越来越多，所以由正常视力引申词义极好的视力。
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