Roman philosopher and poet who is famous for De Rerum Natura( On the Nature of Things),a long poem that attempts to explain the universe in scientific terms in order to free people from superstition and fear of the unknown是什么意思_Roman philosopher and poet who is famous for De Rerum Natura( On the Nature of Things),a long poem that attempts to explain the universe in scientific terms in order to free people from superstition and fear of the unknown在线翻译_英语_读音_用法_例句