arrowhead造句
Theindianschippedflintarrowhead.Thearrowheadwasusedasaweapontohuntfood.InFigure2,eacharrowheadrepresentsaninterface.Thearrowistippedwithanironarrowheadtoperforateitstarget.CanyouseeJupitertonight,infr...
Theindianschippedflintarrowhead.Thearrowheadwasusedasaweapontohuntfood.InFigure2,eacharrowheadrepresentsaninterface.Thearrowistippedwithanironarrowheadtoperforateitstarget.CanyouseeJupitertonight,infr...