单词	durain
释义	durain noun du·​rain ˈd(y)u̇ˌrān plural -s : one of two dull constituents of banded bituminous coal forming lenses or layers and composed of finely comminuted woody debris only partly decomposed compare clarain, fusain, vitrain Word History Etymology Latin durus hard + -ain (as in fusain)
随便看	purposive purposively purposiveness purposivenesses purposivism purposivist purprestures purprision purpura purpuras purpurated purpurateed purpurateing purpurates purpurating purpure purpureal purpurean purpureo- purpureous purpures purpurescent purpuri- purpuric purpurin

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