stratum
/ˈstɹeɪ.təm/ 名词 C2中文： 地层、岩层、阶层
- One of several parallel horizontal layers of material arranged one on top of another.
- A layer of sedimentary rock having approximately the same composition throughout.
- Any of the regions of the atmosphere, such as the stratosphere, that occur as layers.
- A layer of tissue.
- A class of society composed of people with similar social, cultural, or economic status.
- A layer of vegetation, usually of similar height.
- The level of accuracy of a computer's clock, relative to others on the network.
- A historical layer of a language.
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He was cheery and genial to all, but somewhat offhand in his manners, giving the impression that he had seen life in social strata on some far lower horizon than the county society of Sussex.
Furthermore, the steamboat itself served as a vibrant microcosm of American society, teeming with diverse characters from every conceivable background and social stratum.
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