stratum
🇬🇧/ˈstrɑːtəm/ 🇺🇸/ˈstreɪtəm; ˈstrætəm/📚 12268 21 1托福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
noun [抽象名词]（组织的）层；[地质] 地层；社会阶层
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。
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