单词音标：
【音标】 ['sʌb'streitəm]
汉语翻译
n. 基础, 根据, 下层, 基层, 基质, 培养基, 胶层【计】 基底
【医】 酶作用物, 酶解物, 底质; 下层, 基层, 低层
词型变化：
形容词:substrative 名词复数:substrata英语解释：
名词 substratum:
- a surface on which an organism grows or is attached同义词：substrate
- any stratum or layer lying underneath another同义词：substrate
- an indigenous language that contributes features to the language of an invading people who impose their language on the indigenous population同义词：substrate
