activity job活动作业activityn.活动；活跃vt.表演adj.厉害activity of dehydrogenses脱氢酶活性activity and polymorphism活性与多态性activity mode of teaching教学方式activity of transaldolase转醛酶活性activity report subsystem活动报告子系统Activity Based Management作业管理activity-based-budget作业预算activity of sperm acrosin精子顶体酶活性activity carbon separation活性碳分离activity-based screening活性筛选