coloring
/ˈkʌlərɪŋ/📚 13308中考四级六级考研the process or skill of applying a substance to something so as to change its original color. "the salon concentrates purely on coloring"
verb [vt. 及物动词]着色（color 的 ing 形式）；出现颜色
Not only the coloring genes, but lots of other genes are getting mixed up, too.
不仅是染色基因，还有很多其他基因也混在一起了。
noun [具体名词]着色；着色剂；配色；天然色；外貌
What we did in our ancestry was to produce more permanent natural coloring in our skin cells.
我们祖先所做的是在我们的皮肤细胞中产生更持久的天然色素。
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