我们可以查明在特定时间内花在食物上的钱有多少。
We can find out how much money is spent on food in any given period.
有规定要求学校每餐提供某些特定种类的食物，达到某些营养要求，以确保孩子们吃到相对均衡的正餐。
Regulations require schools to provide certain types of food at each meal and meet certain nutritional goals that ensure children get a relatively balanced meal.
的确，有一些食物在高浓度、特定的条件下会诱发肾结石。
It is true that some of these foods in high concentrations and under specific conditions may cause kidney stones.
应用推荐