单词	heptagon
释义	hep·ta·gon \ˈheptəˌgän sometimes -tə̇gən\ noun (-s) Etymology: Greek heptagōnos heptagonal, from hepta seven + -gōnos (from gōnia corner, angle) — more at -gon : a plane polygon having seven angles and therefore seven sides
随便看	buff-bare buff-breasted sandpiper buffcoat buffe buffed buffel buffel grass buffelhead buffer buffer buffer solution buffer state buffer stock buffer stop buffer strip buffet buffet buffet car buffeting buffet stool buffi buffier buffiest buffing buffing

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