| 词汇 | stratum |
| 释义 | stratum noun [ C ] uk/ˈstrɑː.təm/ us/ˈstreɪt̬.əm/ strata /ˈstrɑː.tə/ us/ˈstreɪt̬.ə/ 部分；层；阶层 one of the parts or layers into which something is separated The report shows that drugs have penetrated every stratum of American society. 报告显示，毒品已经渗入美国社会的各个阶层。 geology specialized层;岩层;地层 a layer of rock, soil, or similar material The cliffs are characterized by remarkable zigzagging strata of shale and sandstone. 这些悬崖的特征是它们由一层层清晰易辨的页岩、石灰岩和砂岩交错构成。 |
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