blackboard jungle
noun [ U ] uk/ˌblæk.bɔːd ˈdʒʌŋ.ɡəl/ us/ˌblæk.bɔːrd ˈdʒʌŋ.ɡəl/
（学校学生）无组织无纪律状态
the way of life and activities connected with schools, especially when considered as difficult and confusing
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。