短语词组短语elliptical radio galaxy 椭圆射电星系supergiant elliptical galaxy 超巨椭圆星系giant elliptical galaxy [天]巨椭圆星系Sagittarius Dwarf Elliptical Galaxy 人马座矮椭球星系dwarf elliptical galaxy 矮椭圆星系 返回 elliptical galaxy