“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	Lost Lost and Found Pieces of Philological Studies Lost and Recovered: A Brief History of The Development of China's Environmental Art Lost and Searched Pieces of Philological Studies lost circulation material，LCM Lost City meteorite Lost Generation lost-in-a-forest problem Lost in Thailand Lost in the Funhouse Lost in Yonkers lost motion Lost Paradise lost poem Lost Street Pavilion， Empty-city Stratagem， Kill Ma Su lost wax casting lost-wax process lot LOTEM Lotfi Asker Zadeh lot fraction defective lotic biocenosis lotions Lotka Lotka's law

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。