talk down something
— phrasal verb with talk us/tɔk/verb [ I/T ]
to tell people that something is not important or interesting:
Bonds is doing everything possible to talk down his achievements.
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。