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有効 ゆうこう作用 さようじゃなかった
yūkōsayōjanakatta

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Noun
, 
Da Copula

The past negative form of 有効作用

1. Wasn't effective.; Didn't work.

Past/Perfective
, 
Negative
, 
Physics

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有効作用じゃなかった

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