“period of observation”概念、定义、翻译-科学时代

单词	period of observation
释义	人口学词汇手册 period of observation 观察时期
随便看	write through write-up write-up write-up write-up write-up write-up writing writing ability writing achievement writing achievement test writing across the curriculum writing article writing book writing conference writing course writing-down allowance writing-down allowance writing drill writing effect writing exercise writing group writing in an easy and fluent style writing ink writing in the vernacular

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。