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曾的雾霾PM2.5让大年夜家提心吊胆，事真氛围的净化对人体的伤害巨大年夜 ，大年夜家皆没有但愿本身的身材被那类仄白无端的净化物给风险，现在的病毒也让大年夜家重逝世惊骇，病毒能够经由过程气溶胶停止传播，没