“educational marginal cost”概念、定义、翻译-科学时代

单词	educational marginal cost
释义	教育学词汇手册 educational marginal cost 教育边际成本
随便看	quarry quarry quarry quarry quarry quarry quarry bank quarry blasting quarry blasting quarry cord quarry engineering quarrying quarrying quarry operation quarry powder quarry rock quarry site quarry stone masonry quarry waste quart quart quartal harmony quartan malaria quartation quarter

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。