| 单词 | cleavage | 
| 释义 | cleavage [`klēv·ij]  CRYSTALLOGRAPHY Splitting, or the tendency to split, along planes determined by crystal structure and always parallel to a possible face.  EMBRYOLOGY The subdivision of activated eggs into blastomeres.  GEOLOGY Splitting, or the tendency to split, along parallel, closely positioned planes in rock.  | 
	
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