American biologist who with Francis Crick proposed a spiral model,the double helix,for the molecular structure of DNA. He shared a1962 Nobel Prize for advances in the study of genetics.是什么意思_American biologist who with Francis Crick proposed a spiral model,the double helix,for the molecular structure of DNA. He shared a1962 Nobel Prize for advances in the study of genetics.在线翻译_英语_读音_用法_例句