blended family
[名词]
a family in which the parents live with the children from their own relationship along with the children from previous ones

重组家庭, 混合家庭
pedigree
[名词]
the recorded ancestry or lineage of individuals, typically in the context of their descendants tracing back to a common ancestor

家谱, 血统
surrogate mother
[名词]
a woman who agrees to carry and take the responsibility of another couple's child

代孕母亲, 代孕者
Ex: The laws surrounding the rights of surrogate mother vary significantly from one country to another .
a person from whom one inherits DNA and is directly responsible for their birth

生物父母, 亲生父母

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