A cephalopod mollusk of the genus Nautilus, especially N. pompilius, found in the Indian and Pacific oceans and having a spiral, pearly-lined shell with a series of air-filled chambers.是什么意思_A cephalopod mollusk of the genus Nautilus, especially N. pompilius, found in the Indian and Pacific oceans and having a spiral, pearly-lined shell with a series of air-filled chambers.在线翻译_英语_读音_用法_例句