[Objective] to study the toxicity of the road dust.

目的探讨公路粉尘的细胞毒性作用。

youdao

The contribution rate of the road dust to particulate concentration in the urban area is 30% ~ 50% during motor vehicle running.

机动车行驶过程道路扬尘是城区颗粒物污染的主要因素，其贡献率可达30% ~ 50%。

youdao

The limousine sped off down the road in the proverbial cloud of dust.

那辆豪华轿车沿着公路向前飞驰而去，车后扬起了俗话说的滚滚尘土。

《柯林斯英汉双解大词典》

Up the road came the sound of creaking wheels and then, a slow cloud of dust.

VOA: special.2009.11.14

The road was almost obscured by the dust kicked up by the trucks in front of us.

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The donkey is having a little dust bath in the road before the arrival of the Streetview car.

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In the foot-well and the wheel arches, scientists found traces of a distinctive mix of chalk, brick dust and concrete used to cover the road leading to the ditch.

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