虽然冰箱能延长食品的保存时间,但是每种食品都有一定的保质期,如不及时吃掉就会变质,而冰箱里常常储藏着很多食品,你不可能将它们的保质期一一记住。我想为冰箱设计一个食品保质期提醒 Although the refrigerator can extend the shelf life of food, each food has a certain shelf life. If it is not eaten in time, it will deteriorate. In the refrigerator, many foods are often stored, and you can not remember the shelf life of each. I want to design a refrigerator food shelf life reminder