一岁以后就可以喝纯牛奶了，三段奶粉蛋白质还没纯牛奶含量高，为了口感好还会添加香精和糖，其他的维生素矿物质什么的一日三餐就可以补充到。当然有钱愿意买奶粉那就喝呗。
When you're one year old, you can drink pure milk. Three pieces of milk isn't even high in milk, you can add spices and sugar to your taste, and the rest of the vitamin minerals can be filled with three meals a day. Of course, if you have the money to buy milk, you can drink it.