单词	retroaction
释义	retroaction noun ret·​ro·​ac·​tion ˌre-trō-ˈak-shən  1 [retroactive] : retroactive operation (as of a law or tax) 2 [retro- + action] : a reciprocal action : reaction Word History First Known Use 1728, in the meaning defined at sense 1
随便看	goaling goalkeeper goalkeepers goalkeepings goalkickers goalless goalmouth goalmouths goalpost goalposts goals goalscorers goaltender goaltenders goaltending goaltendings goalward goan goanese goanna goannas goans goas goat goat antelope

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