英语词汇retroactivity怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	retroactivity
释义	ret·ro·ac·tiv·i·ty /ˌretrəʊækˈtɪvətɪ/ n.
随便看	overlay overlay overlayer overlaying over-laying overlays overlays' overlay² overlay¹ overleaf overleap overleaped overleaping overleaps overleapt overlearn overlearned overlearnedly overlearnedness overlearnedness' overlearnednesses over-learnedness's overlearning overlearns overlearnt

英汉双解词典包含548777条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。