late 14c., "action of applying color," noun of action from color (v.). Figurative use by 1540s. Meaning "way something is colored" is early 15c. Coloring book is from 1931.
权威例句
1. A few drops of green food coloring were added.
加了几滴绿色的食物色素。
2. Other countries vary the coloring of their bank notes as well as their size.
其他国家的纸币色彩不一,大小也不同。
3. The room was quiet and neutral in coloring,but it was given accent by bowls of bright flowers.
室内色彩素静,但是一盆盆的鲜花,使屋子大为增色。
4. The coloring of food is against the law in some countries.
给食物加上色素在有些国家属违法行为.
5. Animals'protective coloring enables them to blend with their surroundings.