op.er.oseadj.(形容词)Involving great labor; laborious.费力的,艰苦的Industrious; diligent.勤勉的,刻苦的来源:Latin operôsus 拉丁语 operôsus from opus oper- [work] * see op- 源自 opus oper- [工作] *参见 op- 【引伸】op.erose.lyadv.(副词)op.erose.nessn.(名词)