What exactly is colour-blindness and how do you find out if you have it?

究竟什么是色盲？怎样才能判断自己是否是色盲？

柯林斯例句

Scientists say they are a step closer to curing colour blindness using gene therapy.

科学家称,他们利用基因疗法治疗色盲的方法更进了一步.

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Colour Blindness is a sex - linked recessive trait 20 times more common in men than in women.

色盲是伴性隐性遗传疾病,男性发病率为女性的二十倍.

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