Poor air quality can also contribute to illness.

糟糕的空气质量也会导致生病。

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Smoke from fires can contribute to poor air quality far from the fire itself.

即使在距离火灾地点很远的地区，火灾烟尘也能使其空气质量下降。

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As for wearing a watch wrist is black, and poor air quality, dust long card has a direct relationship in watchband.

至于戴表时手腕变黑的问题，则是与空气质量差，灰尘长期卡在表带有直接关系。

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Pollution from road traffic, particularly diesel fumes, is the most significant cause of poor air quality in most cities.

BBC: Court reserves UK air quality ruling

People are heavily dependent on cars, the air quality is poor and access to green space is haphazard.

ECONOMIST: Greening Houston

They lean toward making poor quality ads and then saturating the airwaves with them, he said, resulting in an air war that drains campaign coffers and turns voters off.

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