1·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.
他说，寻求辅助生育治疗的伴侣，不管是同性恋还是异性恋，都很担心如果孩子知道自己能找回生父母会有什么后果。
2·'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.
如果你查看有关父子关系的研究，即使是保守的数据也显示出8%到15%的小孩没有被父亲照顾过，不管是不是亲生父亲。
3·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.
约42%的美国人至少有一个继亲，皮尤的调查结果显示，这些人往往觉得，自己对亲生父母、亲生子女或亲兄弟姐妹的义务感，比对继亲的义务感更加强烈。
4·Certainly, the biological link between parent and child is fundamental.
当然了，父母和孩子之间的生理联系是基本的。
5·Only Constanza’s biological mother — the pair will not say which one gave birth to her because, as they explain, they are both her mothers — is her legal parent.
只有肯斯坦扎的生母才是她的法定母亲——即便两人不肯透露谁生了肯斯坦扎，她们解释说两人都是她的母亲。
6·Today's families may include both the biological mother and father or a single parent or guardian, grandparents or other extended family, same-gender parents, or foster parents.
今天的家庭可能包括亲生父母，或者是单亲或监护人，以及祖父母或其他延伸的家庭成员，甚至是同性父母或者养父母。
7·Chemical modification of protein, as an effective way to improve the physicochemical and biological characteristics of the parent protein, has attracted much research and development interest.
蛋白质的化学修饰作为改善蛋白质的物理化学和生物学特性的有效手段，已经得到了越来越多的研究和开发。
8·The distribution of element in soil profile was related to the characteristics of elements, soil parent, topography, climate and intensity of geological leaching and biological accumulation.
各元素在土壤剖面中分布状况与元素特性、母质，地形、气候以及地质淋溶和生物积累强弱有关。
9·The most common type of single-parent family is one that consists of a mother and her biological children.
最常见的单亲家庭类型是由一位单身妈妈和她的孩子组成的家庭。
10·Social scientists have found that children growing up in single-parent families are disadvantaged in some ways when compared to those from two-biological-parent families.
社会学家发现，和在双亲家庭成长起来的孩子相比，单亲家庭长大的孩子在某些方面稍显劣势。