biological parent

基本解釋

He said that couples, gay and straight, who wanted fertility treatment were often worried about the effect on a child of knowing that they could track down their missing biological parent.
他說，尋求輔助生育治療的伴侶，不管是同性戀還是異性戀，都很擔心如果孩子知道自己能找回生父母會有什么后果。
The 42% of Americans who have at least one step-relative typically feel a stronger sense of obligation to their biological parent, child or sibling than to their step-relatives, the Pew survey says.
約42%的美國人至少有一個繼親，皮尤的調查結果顯示，這些人往往覺得，自己對親生父母、親生子女或親兄弟姐妹的義務感，比對繼親的義務感更加強烈。
blog.sina.com.cn
'If you look at the studies into paternity, even conservative figures show that between eight and 15 percent of children haven't been fathered by the man who thinks he's the biological parent.
如果你查看有關父子關系的研究，即使是保守的數(shù)據(jù)也顯示出8%到15%的小孩沒有被父親照顧過，不管是不是親生父親。

No child should know their biological parents and no parent should know their child.
沒有小孩應該認親,也沒有父母應該辨認出他們的孩子。
耶魯公開課 - 政治哲學導論課程節(jié)選