stratum
/streɪtəm/
n. 层, 地层, 阶层
[医] 层
词形变换
复数 strata
英文释义
n. 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)
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stratum
/streɪtəm/
n. 层, 地层, 阶层
[医] 层
词形变换
复数 strata
英文释义
n. 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)
登录 后可记录学习进度。