A search engine associated with a particular topic such as Shakespearean studies. It functions very much like a conventional search engine, but it only searches a small area of the Internet connected with the topic it deals with.
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。