上述每类被污染空气基本都含有粒状污染物。
Each of the preceding classifications of polluted air masses involves primarily particulate pollutants.
上述每类污染空气的物质一形成就含有粒状污染物。
Each of the preceding classifications of polluted air masses involves primarily particulate pollutants.
上述每类污染空气的物质一形成就含有粒状污染物。
Each of the preceding classifications of polluted air masses involves primarily particulate pollutants.
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