on the hop unprepared. British informal
1991M. S. PowerCome the Executioner He went down to the dining-room, catching the staff on the hop, but they greeted him cheerfully enough.
英语词组固定搭配大全包含15956条英汉双解词组,基本涵盖了全部常用英文词组、短语的翻译及用法,是英语学习的有利工具。