radioactivereɪdɪəʊˈktɪv放射性的radiumˈreɪdɪəm破布抹布railreɪl铁路railwayˈreɪlweɪ铁路铁道rainreɪn雨水vi下雨rainbowˈreɪnbəʊ彩虹raincoatˈreɪnkəʊt雨衣rainfallˈreɪnfɔːl一场雨降雨量rainyˈreɪnɪ下雨的多雨的raisereɪzvt...