| 单词 | Venn diagram | 
| 释义 | Venn diagram    (vĕn)n.  A diagram using circles to represent sets, with the position and overlap of the circles indicating the relationships between the sets. [After John  Venn (1834-1923), British logician.]  Venn diagramtop: Sets A and B intersect to form set C. bottom: Set B is a subset of set A. All members of B are also members of A.  | 
	
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