With the growth of one and gradual full play of the fly ash volcanic ash effect of age, the speed of carbonization will be reduced gradually.

随着龄期的增长和粉煤灰火山灰效应的逐渐发挥，碳化速度将逐渐降低。

youdao

Volcanic ash showered down on the town after the eruption.

火山喷发后，小城落了一层火山灰。

《牛津词典》

A cloud of volcanic ash is spreading across wide areas of the Philippines.

一大片火山灰正在向菲律宾的大块区域扩散。

《柯林斯英汉双解大词典》

The ancient Romans discovered that volcanic ash made better cement.

VOA: special.2009.12.01

A volcanic eruption in Iceland sent a plume of ash into the atmosphere.

VOA: standard.2010.04.15

And Flynn says the cloud is spreading. "The southern part of Europe is for the most part clear (OMITTED) but the volcanic ash cloud is anticipated to extend slightly further south and eastward during this night."

VOA: standard.2010.04.16

No one denies that volcanic ash can cause jet engines to fail in flight.

ECONOMIST: Volcanoes and air travel: Small eruption in Iceland | The

Last year passenger numbers were down by 2.25% but much of this was attributed to the volcanic ash.

BBC: Increase in air passenger numbers in January

It's certainly one way to ensure you don't fall victim to volcanic ash.

BBC: Holidaymakers on the beach in Blackpool