stratum
柯林斯词典
1. N-COUNT A stratum of society is a group of people in it who are similar in their education, income, or social status. 社会阶层[正式] [usu with supp]
It was an enormous task that affected every stratum of society. 这是一项影响到社会各阶层的重大任务。
2. N-COUNT Strata are different layers of rock. 岩层[技术] [usu pl]
Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago. 岩层中的证据表明该地区在15,000 年前曾经非常干旱。
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stratum /ˈstrɑːtəm, ˈstræt-/ (strata)
剑桥词典
- one of the parts or layers into which something is separated
部分;层;阶层
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
a layer of rock , soil , or similar material
层;岩层;地层
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。 返回 stratum