| 释义 | 
		stratifications是stratification的复数 stratification美 [.strætɪfɪ'keɪʃ(ə)n]  英 [.strætɪfɪ'keɪʃ(ə)n]  n.  | 6. 【地质学;地理学】层理;分层,层叠形成,成层作用[现象] 6. 【地质学;地理学】层理;分层,层叠形成,成层作用[现象]  |  
 n.  | 1. the process of stratifying something, or the state of being stratified 2. a layer, caste, class, or group into which something is stratified 3. the division of a society into different groups 4. the way in which rock forms different layers 1. the process of stratifying something, or the state of being stratified 2. a layer, caste, class, or group into which something is stratified 3. the division of a society into different groups 4. the way in which rock forms different layers  |  
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