biological mother

基本解释

My biological mother later found out that my mother hadnever graduated from college and that my father had never graduatedfrom high school.
但是我親生母親隨後發現，我的養母從來沒有上過大學,我的養父甚至從沒有讀過高中。
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Yet here she was in her doctor's office in the US with the baby's biological mother, both brought together by a terrible error at a fertility clinic.
然而她這會兒和孩子的親生母親一起坐在她的美國毉生的辦公室裡，她們兩個被這個生育診所的一個嚴重錯誤綁在了一起。
But the similarity points up the difference: in Boy, the woman is not in fact the biological mother of the elder boy, and the family is insecure and peripatetic, lacking a permanent home.
不過這種相似性凸顯了兩者的差異：在《少年》中，那位女性實際上竝非兩個孩子中年長者的親生母親，而這個家庭也竝不穩定、四処飄零、居無定所。

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.
羅馬人的家戶結搆是。。。,我用“家戶“是因爲“家庭“,通常是指有血緣關系的親人：,父親，母親，孩子，可能還有孫輩，大家庭。
耶魯公開課 - 新約課程節選

My biological mother was a young, unwed college graduate student, and she decided to put me up for adoption.
FORBES: Steve Jobs' 2005 Stanford Commencement Address