A constellation in the Northern Hemisphere between Lacerta and Perseus and south of Cassiopeia. It contains a large spiral galaxy visible to the naked eye. The spiral is1.84?05 light-years from Earth.是什么意思_A constellation in the Northern Hemisphere between Lacerta and Perseus and south of Cassiopeia. It contains a large spiral galaxy visible to the naked eye. The spiral is1.84?05 light-years from Earth.在线翻译_英语_读音_用法_例句