想想食物的颜色，比如西红柿的红色、胡萝卜的橙色、猕猴桃的绿色以及葡萄的紫色。

Think about the colors of the food such as the red of the tomatoes, the orange of carrots, the green of kiwi fruit and the purple of grapes.

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橙色的胡萝卜进入锅中。

Orange carrots go into the pot.

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橙色和黄色的食物身上的颜色，如胡萝卜，红薯和黄色辣椒都来自于类胡萝卜素，一种能增强免疫系统功能的化合物。

Orange and yellow foods such as carrots, sweet potatoes and yellow peppers get their color from carotenoids, compounds that boost the immune system.

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