retroactively
adv. 追溯地；逆动地
例句
The ruling should be applied retroactively.
这一裁决应该具有追溯效力。
《牛津词典》
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。
《柯林斯英汉双解大词典》
The cap won't apply retroactively.
l该封顶计划没有追溯力。
