So if I can make an analogy, let's say that you were trying to tell the difference between a good restaurant, a healthy restaurant and a sick restaurant, and all you had was the list of ingredients that they had in their larder.
允许我也打个比方， 就好比你想比较 好吃又健康的餐馆 和差的餐馆， 但你手里只有它们的佐料清单， 它们贮藏室里有什么。