Many explanations answer the question why something happened, and one view of good explanations is that the only feature they have in common is that of being satisfactory answers to some why-question, as asked by some person in some situation.
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。