trade on/upon something
— phrasal verb with trade us/treɪd/verb [ I/T ]
to use something for your own advantage, esp. unfairly:
He ran the kind of political campaign that trades on people’s fear of crime.
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。