activity job活动作业activityn.活动；活跃vt.表演adj.厉害Activity of a muck-raker搜集并张扬丑闻的活动activity and communication活动与交往activity correction factor[化] 活性校正因子Activity Address Directory通信保密单位地址录activity-level hierarchy作业水平类别activity - based costing作业成本法Activity dependency metric活动依赖关系度量Activity-Based-Costing作业成本法Activity of antidepression抗抑郁作用activity coefficient model活度系数模型