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| gaseous air pollutant Uncondensed or volatile gases, usually comprised of chemical compounds, discharged to the atmosphere (凝结或挥发性气体，通常是化合物，排放到大气中。) | |||
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| gaseous air pollutant Uncondensed or volatile gases, usually comprised of chemical compounds, discharged to the atmosphere (凝结或挥发性气体，通常是化合物，排放到大气中。) | |||