stratum

英 [ˈstrɑːtəm]

美 [ˈstreɪtəm]

n.  层; 岩层; 地层; 阶层

复数：strata　

TOEFLGRETEM8医学

Collins.1 / BNC.8071 / COCA.11902

牛津词典

noun

• 层；岩层；地层
  a layer or set of layers of rock, earth, etc.
• 阶层
  a class in a society
  1. people from all social strata
     来自不同社会阶层的人

柯林斯词典

• N-COUNT 社会阶层
  Astratumof society is a group of people in it who are similar in their education, income, or social status.
  1. 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工作。
  2. The rebels came overwhelmingly from the poorest strata of rural society.
     叛乱分子绝大多数来自农村的最贫困阶层。
• N-COUNT 岩层
  Strataare different layers of rock.
  1. Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.
     岩层中有证据表明，该地区在 15,000 年前曾经非常干旱。

英英释义

noun

• an abstract place usually conceived as having depth
  1. a good actor communicates on several levels
  2. a simile has at least two layers of meaning
  3. the mind functions on many strata simultaneously
  Synonym:levellayer
• people having the same social, economic, or educational status
  1. the working class
  2. an emerging professional class
  Synonym:classsocial classsocio-economic class
• one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)

双语例句

• Both inhibition of cell mitosis, can effectively penetrate into the stratum corneum.
  同时具有抑制细胞有丝分裂的作用，能有效地渗透进皮肤角质层。
• The population is divided into strata and a random sample is taken from each stratum.
  总体分成阶层后由各阶层抽选出来的随机样本。
• Tramps are from the lowest stratum of society.
  流浪汉来自社会最下层。
• Layer bound characteristic of the mineral ore controlled by stratum and lithology being obvious.
  矿体受地层和岩性控制，具有明显的层控特点。
• The research of seismites mostly focuses on the marine stratum before Paleozoic.
  目前国内外学者对震积岩的研究主要集中在古生代以前的海相地层。
• It concludes the stratum situation and economic relationships in Britain in her century.
  它的结论是地层情况和经济关系，在英国，在她的世纪。
• An aquifer is a water-bearing rock stratum such as sandstone and chalk.
  地下蓄水层是一些有水的岩石层，如沙岩和白垩岩。
• 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工作。
• Effect of elastic modulus of stratum and cement sheath on casing strength
  地层和水泥环弹性模量对套管强度的影响分析
• They represent each society stratum.
  他们代表各个社会阶层。