retroactivity

US 
UK [retrəʊæk'tɪvɪtɪ]
  • n.追溯既往
  • Web溯及力;溯及既往;追溯旧案
n.
1.
追溯既往

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard