stratum
[ˈstrɑ:təm]
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基本释义:n.地层,社会阶层
英英释义:one of the parts or layers into which something is separated
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| 参考例句:
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- 1. The coal is a coal resource that reserves in old stratum. 石煤是贮藏在古老地层中的一种煤炭资源。
- 2. How does Chinese society define the class and stratum? 中国社会如何界定阶级与阶层?
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