Applied to features that are shared by different groups of biological organisms and are inherited from a common ancestor. The term means ‘old-featured’ and the features to which it is applied were formerly called ‘primitive’.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。