单词 | stratum |
释义 | stratum stratum /ˈstrɑː.təm/ aep /ˈstræ.t̬əm/ noun [C] (PLURAL strata) F0 one of the parts or layers into which something is separated: » The report shows that drugs have penetrated every stratum of American society.Thesaurus+: ↑Coverings and layersF0 SPECIALIZED a layer of rock, soil, or similar material: » The cliffs are characterized by remarkable zigzagging strata of shale and sandstone.Thesaurus+: ↑Coverings and layers |
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