activity job活动作业activityn.活动；活跃vt.表演adj.厉害activity of mitochondria线粒体活性activity teaching method活动教学法activity theory of aging老年活动论Activity Cost Accounting作业成本法activity of daily living日常生活活动activity of phagocytosis吞噬活性activity-guided method行动导向教学法Activity liver cirrhosis活动性肝硬化Activity-Based Costing业务量成本法/作业成本法activity and its process活动及其实现过程