“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	lattice of differentiable functions lattice of Gaussian integers lattice of normal divisors lattice of partitions lattice of periods lattice of points lattice of projections lattice of relations lattice of sets lattice of subalgebras lattice of subgroups lattice of subspaces lattice of subvarieties lattice of topologies lattice of translations lattice of varieties lattice operation lattice optics lattice-ordered lattice ordered algebra lattice-ordered algebra lattice ordered Banach space lattice-ordered Banach space lattice-ordered class lattice-ordered group

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