单词	圆的半径
释义	圆的半径radius of circle
随便看	central fulcrum central fuselage central gallows for antenna central gallows for counterpoise central ganglion central gear central goby central government central government inspection central granite central granule central greece central hearing loss central heating central heating and air-conditioning central heating system central homology central humidifier central hypoventilation centralia central igniter central illumination method central impact central implantation central incisor