have a field day have full scope for action, success, or excitement, especially at the expense of others.
☞ Originally, a field day was literally a day on which military manoeuvres were held as an exercise.
2005DVD Verdict Hitchcock would have had a field day with this story-he would have injected a far more sinister sensibility.
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。