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substratum 'sʌb'strɑ:tәm, 'sʌb'streitәm

GRE

释义

n. 基础, 根据, 下层, 基层, 基质, 培养基, 胶层
[计] 基底

英文释义

n a surface on which an organism grows or is attached
n any stratum or layer lying underneath another
n an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population

BNC词频排名: 35,255 | 当代语料库词频排名: 32,521