rule out something
— phrasal verb with rule us/rul/verb [ I/T ]
to stop considering something as a possibility:
It’s unlikely that he’ll run for president, but you can never rule anything out.
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。