追溯既往的英语翻译

“追溯既往”对应的英文单词有：trace the origin of the bygone、retroactivity、run back over the past ，一共3个，具体意思及用法如下：

trace the origin of the bygone追溯既往

retroactivity追溯既往

run back over the past追溯既往

追溯既往的法案Ex Post Facto laws

无追溯既往的效力withoutretroactiveeffect