要详细点的句子吧 这个词很多解释亚 substrate [5sQbstreit] n. (=substratum)底层,下层,[地]底土层,基础,本源,[生]培养基,[生化]酶作用物,[摄](胶片)感光底层 substrate sub.strate AHD:[s?b“str3t”] D.J.[6s(b7streit] K.K.[6s(b7stret] n.(名词) The material or substance on which an enzyme acts. 被酶作用:酶在其上进行作用的物质 Biology A surface on which an organism grows or is attached. 【生物学】 基层:动植物生长或附着的表面 An underlying layer; a substratum. 底层,下层土