He tracked down his cousin and uncle. The latter was sick.

他追踪找到了他的堂兄和叔叔。后者病了。

《柯林斯英汉双解大词典》

Parker tracked down the Grossmans.

帕克追查到格罗斯曼一家。

youdao

The police have tracked down the escaped convict.

警察已追捕到逃犯。

youdao

Since a deadly bombing attack on hotels in Jakarta last year, Indonesian security forces have tracked down the militants responsible and prevented other attacks.

VOA: standard.2010.03.24

Those people are all in trouble because it's illegal to trade on insider information and they tracked them all down.

所有人都惹上了麻烦,因为内幕交易是非法行为,全部人都被捕了

耶鲁公开课 - 金融市场课程节选

By asking around pubs in town, they tracked down the owner, who lived in York.

BBC: The true life of a location scout

The third was finally tracked down 30 miles away in a garden in Callander.

BBC: Raccoon

Several hours later the second inmate surrendered peacefully after being tracked down by police.

BBC: Canada prisoners in daring helicopter escape