trip up (someone)
— phrasal verb with trip us/trɪp/verb [ I/T ] -pp-
to make a mistake or to cause someone to make a mistake:
I did OK on the exam except for the last question, when I got tripped up by a word I didn’t understand.
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。