建议大家在家里有罐的前提下买袋装的奶粉装入罐中，这样可以节省费用，而增加奶粉的保存性和密封性，对小孩子也没有任何影响。
It is recommended that you buy bagged milk powder and put it into cans if you have cans at home, which can save money and increase the preservation time and hermetic seal of milk powder; it won’t have any influence on the children.