Danny is their adopted son.

丹尼是他们的养子。

《牛津词典》

And he points to his adopted son as evidence for that.

他指着他的养子作为证据。

youdao

Looking away from the flow, I fixed my gaze on the distant Rockies, where our adopted son had loved to go in search of the perfect tree.

我从流动的灯火中抬头远望，凝视着远处的落基山，我们的养子以前喜欢去那里寻找完美的圣诞树。

youdao

John Allan never officially adopted him as a son, but the boy became known as Edgar Allan Poe.

VOA: special.2009.02.02

So we move to Plato's son, his adopted son, in a manner of speaking, Aristotle.

我们要开始讲柏拉图的儿子，他的养子，从某方面来说即亚里士多德。

耶鲁公开课 - 政治哲学导论课程节选

He had adopted another Roman, Octavian, and Julius Caesar's adopted son, Octavian, then formed an alliance with Mark Antony, who had been Julius Caesar's friend, and a lesser known figure named Lepidus, whom you don't really need to remember.

恺撒有个养子，屋大维，他与恺撒的朋友，马克·安东尼结成后三头同盟，还有一方大家比较陌生，是雷必达，这个名字不用记。

耶鲁公开课 - 新约课程节选

He is the adopted son of postal workers who raised eight children, he says over and over.

CNN: Can Tony Williams Save D.C.?

As his jury was deliberating, more accusers -- including his own adopted son -- raised allegations of abuse.

CNN: Sources: New Sandusky accusations date back to 1970s

The adopted son is the heir apparent to the LG group.

FORBES: Koo Bon-Moo