火山碎屑流

pyroclastic flow

fire / urgent / ammunition / fiery or flaming / internal heat (Chinese medicine) / hot (popular) / classifier for military units (old) / Kangxi radical 86

volcano

mountain / hill / anything that resembles a mountain / CL:座[zuo4] / bundled straw in which silkworms spin cocoons / gable

to break down / to break into pieces / fragmentary

fragments / particles

bits / fragments / crumbs / filings / trifling / trivial / to condescend to

to flow / to disseminate / to circulate or spread / to move or drift / to degenerate / to banish or send into exile / stream of water or sth resembling one / class, rate or grade