twenty-twenty
英['twentɪ'twentɪ]
美['twentɪ'twentɪ]
- adj.[医]视力正常的
详细释义
Noun:
-
normal visual acuity, as measured by the ability to read charts at a distance of 20 feet
用法讲解
- twenty-twenty vision 〈医〉正常视力...
- twenty-foot equivalent unit 二十英尺当量单位...
- twenty five (=25) 二十五
- twenty pin 中二十箭的优秀别针...
相关词汇
- 20/20 视力正常的
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