DNA fingerprinting is a method used to determine the biological mother and father of an offspring.

DNA指纹是用于确定后代的生物意义上的母亲和父亲的方法。

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My biological mother was a young, unwed college graduate student, and she decided to put me up for adoption.

我的生母是一名年轻的未婚在校研究生，她决定将我送给别人收养。

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My biological mother found out later that my mother had never graduated from college and that my father had never graduated from high school.

但是我亲生母亲随后发现，我的养母从来没有上过大学，我的养父甚至从没有读过高中。

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The household structure of a Roman household was this-- and I say "household," because our word "family," which we usually take to mean the biological family: the father, the mother, the children, maybe the grandchildren, maybe the extended family.

罗马人的家户结构是。。。,我用“家户“是因为“家庭“,通常是指有血缘关系的亲人：,父亲，母亲，孩子，可能还有孙辈，大家庭。

耶鲁公开课 - 新约课程节选

But Brown claims the biological mother broke off the now-strained relationship by text message.

CNN: High court to tackle Native American adoption dispute

It is still unknown whether Debbie Rowe, the biological mother of two of the children, will seek custody.

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Tranda Wecker, the twins' biological mother, then appointed a child law specialist to represent her at the UK hearings.

BBC: News Online