“N. A.”概念、定义、翻译-科学时代

单词	N. A.
释义	请查阅N. A.--N. A. (not available)
随便看	class project class rate class rate class rate class relationship class repression classroom classroom activities classroom atmosphere classroom behaviour classroom behaviour classroom behaviour problem classroom boycott classroom-centred research classroom climate classroom collective classroom communication classroom conversation classroom demonstration method classroom design classroom dialogue classroom discipline classroom discipline classroom discourse classroom discourse

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。