substratum是什么意思_substratum怎么读_音标ˈsʌbstrɑ:təm

substratum是什么意思音标:英 [ˈsʌbstrɑ:təm]美 [ˈsʌbstreɪtəm]

n. 基础, 根据, 下层, 基层, 基质, 培养基, 胶层
[计] 基底

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