retrospectively
[副词]
considering things from a past point of view

回顾地, 追溯地
Ex: The policy changes were retrospectively to address past issues .
persistently
[副词]
with determination and continuous effort, refusing to give up despite challenges or difficulties

坚持不懈地, 持续地
relentlessly
[副词]
with determination and without stopping, often in a harsh or unwavering manner

毫不放松地, 不懈地

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