retroactive amnesia逆行性遗忘;倒摄遗忘
retroactive facilitation摄助长
retroactive issuance后发
retroactive contributions追溯交款
retroactive reading回味阅读
retroactive raids回溯性查抄
retroactive implementation追溯执行
ADJ（形容词） If a decision or action is retroactive, it is intended to take effect from a date in the past. (决定或行为)有追溯效力的 [正式]
ADV（副词） retroactively [ADV with v]
It isn't yet clear whether the new law can actually be applied retroactively.
这项新法令是否具有追溯力还不清楚。