“obsolete old word”的概念、定义、翻译、参考文献-科学参考

单词	obsolete old word
释义	obsolete old word Encyclopedia 文学词汇释 obsolete old word旧词以前广泛流行，随着社会思想观念和风尚的改变，后来已经极少使用或一般不再使用的词语。
随便看	opportunistic species opportunists opportunity analysis opportunity areas opportunity chains opportunity cost opportunity creation Opportunity discovery Opportunity Mars Exploration Rover opportunity to see opposed anvil opposed anvils opposing reaction opposite opposite algebra opposite and complementary opposite and equal opposite angles opposite category opposite composition law opposite derivative opposite dihedral angle opposite direction opposite direction ray opposite edges

科学参考收录了854744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。