冬春季为呼吸道传染性疾病的高发季节,购买和佩戴口罩的人明显增多。大家积极预防应该说是一个好现象,但是对相当一部分人来说,佩戴的口罩并不能真正把致病性微生物拒之“门”外。小口罩中也藏着大学问。 In winter and spring, the number of people who purchase and wear masks is significantly increased due to the high season of respiratory infectious diseases. Active prevention should be said that everyone is a good sign, but for a considerable part of people, the mask can not really wear the pathogenic microorganisms refused to “door” outside. Small masks are also hidden in the university asked.