A filter traps dust from the air.

过滤网可存住空气中的尘埃。

youdao

Oxidation can create some solid particles but if there is particularly more solid in fragrance oil it might be because dust from the air has gotten into the bottle.

除了正常的轻微氧化反应可能会产生极细小颗粒外，如果里面的小颗粒过多，有可能是由于里面钻入的灰尘。

youdao

Though the heavy metal lead is largely gone from our gasoline and paint, it still lies insidiously below us in the ground and occasionally drifts through the air as dust.

尽管金属铅大部分通过汽油和油漆排放出去了，但任有一部分藏在我们看不见的地下，有时候作为灰尘漂浮在空气中。

youdao

"It is not just a case of understanding the activity at the volcano itself, what we are also seeing the effect of at the moment are the prevailing weather conditions because we are in a northerly air stream at the moment and that is bringing the volcanic dust from Iceland down over the U.K.

VOA: standard.2010.04.15

The heat from the friction of its descent into the denser air can ignite the dust and debris in a display of astronomical fireworks.

WSJ: Meteor Creates a Show, No Apparent Damage

Dust from two wood recycling plants in Greater Manchester could be making people living near the sites ill, air quality experts have said.

BBC: Dust from recycling plants 'puts residents at risk'

One theory is that a growing mass of particulates, such as coal dust and biomass (from the widespread use of cow dung as fuel, for instance) in the air above India, now hinders rainfall.

ECONOMIST: India��s climate: Monsoon, or later | The