up to mischief短语⁹⁰⁸⁸⁷⁺⁷ 基本例句 胡闹 Given an unusual amount of free time on their hands outside of working hours, with little in the way of entertainment options, some delegates got up to mischief. 由于在工作之外拥有了大把的业余时间,再加上没有什么可以选择的娱乐项目,于是某些美国代表就开始搞恶作剧。 fortunechina