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TOEFL BNC: 8071 COCA: 11902
stratum
strɑːtəm strtəm ˈstreɪtəm ˈstrætəm
Word forms: plural strata
1 N-COUNT

社會階層 A stratum of society is a group of people in it who are similar in their education, income, or social status. 社會階層 [formal]
  • It was an enormous task that affected every stratum of society. [+ of]

    這是一項影響到社會各階層的重大工作。

  • The rebels came overwhelmingly from the poorest strata of rural society.

    叛亂分子絕大多數來自農村的最貧困階層。

2 N-COUNT [usually plural]

岩層 Strata are different layers of rock. 岩層 [technical]
  • Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago.

    岩層中有證據表明,該地區在 15,000 年前曾經非常幹旱。

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