在低层大气里，氮氧化物使臭氧和可以引致呼吸道疾病的微粒增加。
In the lower atmosphere the oxides of nitrogen add to an increase in ozone and small particles, which can cause respiratory ailments.
在低层大气里，氮氧化物使臭氧和可以引致呼吸道疾病的微粒增加。
In the lower atmosphere the oxides of nitrogen add to an increase in ozone and small particles, which can cause respiratory ailments.
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