“循环”概念、定义、翻译-科学时代

单词	循环
释义	环境科学与工程词汇手册循环 circulation
随便看	youth market youth marketing youth movement youth movement youth pedagogue youth psychology youthquake youthquake youth service youth subculture youth theatre youth tourism youth tourism behaviour youth tourism development youth tutor youth unemployment youth waiting for employment Youtiao Y.O. (yearly output) yo-yo device yo-yo stock yo-yo stock y-parallax Ypresian Stage YPSCE （Young People's Society of Christian Endeavour）

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。