substratum
'sʌb'strɑ:tәm, 'sʌb'streitәm
基本解释
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
上一个单词：substratosphere
下一个单词：substratum moleculare