track down someone/something
— phrasal verb with track us/træk/verb [ T ]
to search for someone or something, often when it is difficult to find that person or thing:
I’m trying to track down one of my old classmates from college.
英语词典包含110679条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。