So the particles of ash were very fine-grained and very sharp compared to normal ash.

所以此时的火山灰颗粒较普通的火山灰来说非常细小而且锋利。

youdao

The fine, glassy particles that make up volcanic ash scour airplane Windows and can clog and stall jet engines.

这些由火山灰构成的细微玻璃状小颗粒会刮伤飞机窗户，阻塞引擎甚至导致引擎熄火。

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The ash is highly hazardous to people, as the fine particles are easily inhaled.

由于微粒极易吸入，煤灰对人体危害很大。

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The Swach's cartridge, a key component of the system, resembles Edison's electric bulb and is made up of a composite of rice-husk ash (a highly porous material derived out of paddy husk) and fine particles of nano-silver, which inhibits bacteria growth.

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