音标：[dai'krәumәtizm] ；

n. 两色, 两变色性, 二色视
[化] 二色性

n a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision)

词型变化：名词复数形式 : dichromatisms

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Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

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