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

到底什么是色盲症，你又是怎么发现自己有色盲症的？

《柯林斯英汉双解大词典》

It's also wise to remember that one in 12 people has colour blindness.

明智的话，你还要记住，12个人中就有1人是色盲。

youdao

It's also wise to remember that one in 12 people has colour blindness.

明智的话，你还要记住，12个人中就有1人是色盲。

youdao