back story
noun [ C ] uk/ˈbæk ˌstɔː.ri/ us/ˈbæk ˌstɔːr.i/
（电影或故事的）故事背景
the things that have happened to someone before you first see or read about that person in a film or story
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。