activity job活动作业activityn.活动；活跃vt.表演adj.厉害Activity Freedom Degree运动自由度activity metabolic rate活动代谢率activity-base costing作业成本法activity of phosphatase磷酸酶活性Activity characteristic活动特征Activity Control Number机构控制编号activity of root system根系活力activity of restraining烟草花叶病毒Activity of soil enzyme土壤酶活性activity-based eosing作业成本法