疫情刚开始的时候口罩紧缺，医生都没有口罩，我就一周买菜一到两次，我会用10天左右，买回来就放在通风的地方。现在我要看戴口罩去了哪里决定用的时间，如果去超市人口密集的地方我用一次就不用了，如果就是坐电梯在小区散步休闲空旷的地方我就用两三天一换

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