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人体呼吸道本身就具有防御本领,鼻腔是一道天然的防御屏障。经常戴口罩,会使这种天然的防御能力“娇生惯养”起来,不能发挥其固有的屏障作
The human respiratory tract itself has defensive skills, the nasal cavity is a natural defensive barrier. Often wear masks, will make this natural defensive ability “spoiled” together, can not play its inherent barrier