retroactive是什么意思？

retroactive

英[ˌretrəʊˈæktɪv] 美[ˌretroʊˈæktɪv]

• adj. 反动的，追溯的，有追溯力的，从以往某天开始生效；

副词：retroactively;

例句

• It is a complicated issue whether the jurisdiction of international tribunals has a retroactive effect. 国际裁判法庭的管辖权是否具有溯及力,是个复杂的问题.
• Your writing would be subject to 1984 - style retroactive erasure. 你所写的将会遭到1984年的风格反动的删去.
• There are few precedents for this sort of retroactive legislation. 这种有追溯力的法规鲜有先例。

柯林斯高阶英汉双解学习词典释义

• ADJ
  （决定或行为）有追溯效力的
  If a decision or action is retroactive, it is intended to take effect from a date in the past.
  例句
  There are few precedents for this sort of retroactive legislation. 这种有追溯力的法规鲜有先例。

英英词典释义

• Adjective
  1. descriptive of any event or stimulus or process that has an effect on the effects of events or stimuli or process that occurred previously
  2. affecting things past;
  "retroactive tax increase""an ex-post-facto law""retro pay"