2nd President of the USA (1797–1801). He was a key figure in the drafting of the Declaration of Independence (1776), and was minister to Britain (1785–88).
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。