New wind mixed with indoor polluted air, the pollutants are filled with the room, although concentrations are diluted, it is easily to create cross-infection.

新风与室内的污浊空气混合，污染物充斥整个房间，虽然浓度得到稀释，可容易造成交叉感染。

youdao

Therefore, quality of indoor air can not be evaluated only by organic compounds polluted in air, but by meteorological conditions.

因此，评价室内空气质量的好坏，不能仅仅考虑污染空气的有机化合物，还应考虑室内环境的气象条件。

youdao

How to improve the indoor air quality and how to prevent the indoor air from being polluted were explained.

系统阐述了改善室内空气质量及防治室内空气污染的方法。

youdao

"Traditional environmental risks are those that face largely the poor in China, risks like drinking water contaminated with infectious organisms or highly polluted indoor air from people burning wood or other dirty fuels inside homes without chimneys."

VOA: standard.2010.04.07

Indoor air can be up to 10 times as polluted as outdoor air, triggering health problems such as asthma.

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