A scyphozoan jellyfish of the genus Cyanea, especially the largest jellyfish, C. arctica, which usually grows to more than 3.6 meters (12 feet) wide and has tentacles over 30 meters (100 feet) long.是什么意思_A scyphozoan jellyfish of the genus Cyanea, especially the largest jellyfish, C. arctica, which usually grows to more than 3.6 meters (12 feet) wide and has tentacles over 30 meters (100 feet) long.在线翻译_英语_读音_用法_例句