Elevated rsp concentrations are believed to be associated with higher respiratory illness and death rates . nitrogen dioxide also contributes to poor air quality in hong kong . this pollutant is believed to cause respiratory irritation and other health problems 高浓度的可吸入悬浮粒子相信与呼吸系统疾病增多及较高的死亡率有关；而二氧化氮也使香港的空气质素变差，这污染物更会刺激呼吸系统及引致其他健康问题。
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Elevated rsp concentrations are believed to be associated with higher respiratory illness and death rates . nitrogen dioxide also contributes to poor air quality in hong kong . this pollutant is believed to cause respiratory irritation and other health problems 高浓度的可吸入悬浮粒子相信与呼吸系统疾病增多及较高的死亡率有关；而二氧化氮也使香港的空气质素变差，这污染物更会刺激呼吸系统及引致其他健康问题。
