你通过鞋子带进家里的灰尘和有毒化学物质会使家里的空气质量恶化。
The dust and toxic chemicals you bring into your house via your shoes can deteriorate the air quality in your home.
潮湿的室内环境使室内空气质量恶化。
汽车数量的日益增长导致大中型城市空气质量恶化，交通堵塞频频发生。
Increasing Numbers of cars result in the worsening of air quality and frequent traffic jams in big and medium-sized cities.
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