Medical tests established that she was not their own child.

医学检测证实她不是他们的亲生孩子。

《柯林斯英汉双解大词典》

He never really accepted her as his own child.

他一直没有真正接纳她为自己的女儿。

《牛津词典》

A foster mother is a mother who takes someone else's child into her family and cares for the child for a period of time just as what she would do to her own child.

养母是指把别人的孩子带到自己家里，像照顾自己的孩子一样照顾他一段时间的母亲。

youdao

"My father," Beatrice said weakly, "why did you do this terrible thing to your own child?"

VOA: special.2009.05.30

And it's come to this, A man can't speak of his own child that's dead."

接着，这里说到，一个男人不能提及自己死去的孩子“

耶鲁公开课 - 现代诗歌课程节选

So, we have a certain mode of talking about things that we own or things that are close to us "My arm, my heart, my child, my car."

我们对我们所拥有的,或是与我们有关的事物,有着特定的表述模式,比如,"我的胳膊,我的心脏,我的孩子,我的爱车"

耶鲁公开课 - 心理学导论课程节选

The Conservative's Baroness Eaton told peers how her own child's cancer was missed by doctors.

BBC: Peers warn against medical negligence legal aid cuts

He wanted to look at someone that way, to smile down at his own child.

NEWYORKER: Teaching

So instead it is a means by which women can personally protect their own child.

BBC: Whooping cough vaccine a 'no-brainer' during pregnancy