“left-behind elderly”的概念、定义、翻译、参考文献-科学参考

单词	left-behind elderly
释义	left-behind elderly Encyclopedia 法学老年社会问题释 left-behind elderly留守老人因子女离开而留在原家庭中的老年人。根据中国对人口迁移流动的定义，严格意义上的留守老人指因子女离开（跨越县级以上行政区）半年及以上而留守在家的老年人。
随便看	Wild Flowers by the Road Wild Flowers of China wild fruit tree Wild Geese and Reeds Wild Geese Descending on the Sandbank wild ginseng wild goose Wild Grass Wild Grass Soceity wild group wild knot wildlife allowed for commercial utilization wildlife domestication and breeding center wildlife management wildlife monitoring wildlife monitoring by line transect method wildlife monitoring by point sampling method wildlife monitoring by quadrat sampling method wildlife park wildlife picture index Wildlife Protection Law of the People's Republic of China wildlife rescue center wildlife synchronous survey wildlife tracing wildlife with extremely small population

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。