retroactively
🇺🇸
/ˌretrəʊˈæktɪvli/
🇬🇧
/ˌretrəʊˈæktɪvli/
adverb
R
applying to times in the past as well as now
The new tax law will be applied retroactively, affecting all transactions since last year.
新税法将追溯适用，影响去年以来的所有交易。
translation
追溯性地