没有吃完的剩菜混倒在一起,等下顿再食用。这样做虽说减少了保存空间,但混杂在一起的食物由于酸碱度不同,极易分解变质,破坏营养。保鲜膜用过不丢弃,反复使用。这种习惯似乎节省了保鲜薄膜,但容易造成交叉污梁,起不到保鲜作用。筷子头向下放置。筷子在洗完后,表面上会沾有 Leftovers without mixing down together, wait for next meal and then eat. Although this reduces the storage space, but mixed with food due to different pH, easily decomposed metamorphism, destruction of nutrition. Cling film used not discarded, repeated use. This habit seems to save the preservation of the film, but likely to cause cross-contamination, can not play the role of preservation. Chopsticks head down. After the chopsticks are washed, the surface will be stained