| 单词 | stratification | 
| 释义 | stratification [´strad·ǝ·fǝ`kā·shǝn]  GEOLOGY An arrangement or deposition of sedimentary material in layers, or of sedimentary rock in strata.  HYDROLOGY 1. The arrangement of a body of water, as a lake, into two or more horizontal layers of differing characteristics, especially densities.  2. The formation of layers in a mass of snow, ice, or firn.  | 
	
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