单词：substratum
音标：['sʌb'strɑ:tәm, 'sʌb'streitәm] ；
n. 基础, 根据, 下层, 基层, 基质, 培养基, 胶层
[计] 基底
[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
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
词型变化：名词复数形式 : substratums
考试类型：[GRE]
考试类型：[GRE]
词性分布：
substratum的用法和样例：
例句
用作名词(n.)
- The story has a substratum of truth.这故事有事实的基础。
- There is a substratum of truth in her story.她叙述中有事实根据.
- The soil has a substratum of rock.这土壤下面有层石头。
词汇搭配
- substratum for waterproofing防水底层
- basaltic substratum玄武岩基层
经典引文
If we look more deeply I think we can find a substratum of common problems.
出自：R. HeilbronerAnatomical information..forms an excellent substratum on which to build future experiments.
出自：Nature