PHRASAL VERB 追踪到;追查到;搜寻到 If you track down someone or something, you find them, or find information about them, after a difficult or long search. 追踪到;追查到;搜寻到
She had spent years trying to track down her parents. [VERBPREP. noun]
她已经花了好多年时间试图追寻父母的下落。
I don't know where that old story came from, I've never been able to track it down. [VERB noun PREP.]