"Substitute" 是指代替品的英文单词。来源：源自英文 "substitute"，意为替代。
例句：
I used almond milk as a substitute for cow's milk in my recipe. (我在食谱中用杏仁牛奶代替了牛奶。)
He found a substitute for his usual brand of toothpaste. (他找到了一种取代他通常牌子牙膏的东西。)
This product is not a substitute for professional medical care. (这个产品不能代替专业医疗服务。)