1. 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。

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1. the act or process of changing the color of something

    Synonym: colouring

2. a visual attribute of things that results from the light they emit or transmit or reflect

    e.g. a white color is made up of many different wavelengths of light

    Synonym: colorcolourcolouring

3. a digestible substance used to give color to food

    e.g. food color made from vegetable dyes

    Synonym: colouringfood coloringfood colouringfood colorfood colour