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retroaction    
n. 反动,反作用,倒行逆施

反动,反作用,倒行逆施

Retroaction \Re`tro*ac"tion\, n. [Cf. F. r['e]troaction.]
1. Action returned, or action backward.
[1913 Webster]

2. Operation on something past or preceding.
[1913 Webster]


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