vt. sep.1.(find)to track sth/sb down or to track down sth/sb
+ lost person跟踪找到；追查到；搜寻到
She had spent years trying to track down her parents.她已经花了好多年时间查找父母的下落。
2.(catch)to track sth/sb down or to track down sth/sb
+ culprit, fugitive, criminal, prey追踪；追捕
They want to track down the terrorists.他们想追捕这些恐怖分子。
The police never tracked down the killer.警方一直都没有擒获杀人凶手。
3.(locate)to track sth/sb down or to track down sth/sb
+ supplier, tradesman, product, item寻找；搜寻；打探
Can you help me track down a supplier of window boxes?能帮我找一个窗栏花箱的供应商吗？