这些脱落的皮屑占你家总尘埃量的比例最高可以达到90%。

Shed skin accounts for up to 90 percent of the dust in your home.

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地震之后发生山体滑坡，导致空气中漂浮的尘埃量增加，从而引起了这次疾病爆发(39)。

This outbreak was associated with exposure to increased levels of airborne dust subsequent to landslides in the aftermath of the earthquake (39).

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他们的结论最近刊登在大气物理化学上：始于上世纪起到现在，空气中的尘埃量翻了一番。这个结论符合他们的分析。

Their conclusion, published recently in Atmospheric Chemistry and Physics, is that in fits and starts over the past century the air became twice as dusty.

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