When there are problems with L- or M-cones the color appearance is mostly based on blue and yellow hues, the complimentary color pair red-green cannot be perceived correctly.

当L-和M-cone存在问题时，颜色的呈现则大多都是基于蓝、黄两个色调，由此导致不能正确的接收值得推荐的红-绿配色。

youdao

Any of various evergreen shrubs of the genus Mahonia, especially M. aquifolium of northwest North America, having compound leaves with spiny-toothed leaflets and black berries with blue bloom.

脉叶十大功劳：一种十大功劳属常绿灌木，尤指冬青叶十大功劳，分布于北美洲的西北部，有带细锯齿单叶的复叶和开有蓝花的黑色果实。

youdao

I 've had so many falls that I' m black and blue all over.

我跌倒多次，弄得全身青一块紫一块。

youdao

- Well -- and I'll fix this blue next time -- I'm first telling the compiler I need access to the standard io library because printf is declared there.

哦！--下次我把这个字体颜色改成蓝色的-,我先告诉编译器--我需要使用,标准输入输出库,因为printf在那个库里面申明的。

哈佛公开课 - 计算机科学课程节选

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