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词汇	obtuse angle
释义	obtuse anglen.Mathematics（名词）【数学】Angle AOB is an obtuse angle.Clarinda/Academy Artworks An angle greater than 90° and less than 180°.钝角：一个大于90°而小于180°的角
随便看	firebrick fire brigade firebug fire clay fire control firecracker fired firedamp fire department firedog fire door firedragon firedrake fire drill fire-eater fire engine fire escape fire extinguisher firefight firefighter fireflood fireflooding firefly fireguard firehouse

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