容易变质的食物应当写明日期，放入冰箱，过期就扔掉。
Perishable foods should be dated and kept refrigerated, and discarded when they expire.
经过一个简单的蒸发过程，可以使得小罐中储存的食物不容易变质。
Food stored in the smaller pot is kept from spoiling through a simple evaporation process.
把容易变质的食物冷藏起来。
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