释义 |
stratum ˈstrɑ:təm, ˈstreɪ` n. (复: strata) 地层;社会阶层 【英】地层 (a sheetlike mass of sedimentary rock or earth of one kind lying between beds of other kinds); 社会阶层 (a socioeconomic level comprising persons of the same status esp. with regard to education or culture) |