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retroactive

美音:[´retrəu´æktıv ]点这儿播放单词美音发声
英音:[´retrəu´æktıv ]点这儿播放单词英音发声
adj.反动的,追溯的,有追溯力的,从以往某天开始生效

难易程度:

retroactive为短语/超纲词汇

词形变化:

名词:retroactivity 副词:retroactively

近义词, 同义词

retroactive


/,retrəʊ'æktɪv; ,rɛtro`æktɪv/
adj (fml 文) effective from a past date 溯及既往的 ; 有追溯效力的
*The new law was made retroactive to
1 January, ie as if it had come into effect then. 新法令生效日期可追溯到1月1日.

retroactive


adj formal
a law or decision that is retroactive is effective from a particular date in the past
= retrospective
 a retroactive pay increase
retroactive to
 The legislation is retroactive to 1st June.
>retroactivelyadv