colourings
n. 着色,着色法(colouring的复数形式)
Our range of herbal teas contain no preservatives, colourings or artificial flavourings.
我们这一系列的药草茶不含防腐剂、色素以及人工调味品。
Glass bottles are filled with water tinted with food colourings.
玻璃瓶中盛满了被食用色素染过色的水。