The state of tranquillity or imperturbability, freedom from anxiety, considered to be one of the desirable results of an immersion in scepticism, and by Epicureans to be part of the highest form of happiness.
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。