火成碎屑

pyroclastic

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

(geology) igneous / volcanic (rock)

surname Cheng

to succeed / to finish / to complete / to accomplish / to become / to turn into / to be all right / OK! / one tenth

to break down / to break into pieces / fragmentary

fragments / particles

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