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呼吸道是直接与外界相通的器官，环境中的各种致病因子如寒冷刺激，大气污染物等随时都有可能入侵呼吸道而致病，尤其是当呼吸道本身的防御功能降低时，这样的致病作用就会显而易见。ＳＯ２是一种常见的环境污染物，经呼吸道吸入可导致呼吸系统的损害。本文探讨寒冷刺激可能促进ＳＯ２对呼吸道的损伤并以补肺汤保护。
Respiratory tract is directly connected with the outside world organs, the environment of a variety of pathogenic factors such as cold stimulation, atmospheric pollutants at any time may invade the respiratory tract and pathogenic, especially when the respiratory tract defense function is reduced, such pathogenic The effect will be obvious. SO2 is a common environmental pollutant, inhaled through the respiratory tract can cause respiratory damage. This article discusses the cold stimulation may promote the respiratory tract damage caused by SO2 and Bufei Tang protection.