这个词是什么意思？
A natural, adoptive, or substitute parent of a dependent child, who lives with only one parent. The single parent may live with or visit the child. The concept includes the never-married, as well as the divorced and widowed.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D015406 · MeSH 2026。
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