thereby hangs a tale idiom humorous
说来话长，其中大有文章
said to someone when what they have asked about involves a long explanation
"Why are you limping?" "Ah, thereby hangs a tale." “你为什么一瘸一拐的？”“唉！说来话长。”
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。