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経済 けいざい性 せい向上 こうじょうじゃなかった
keizai sei kōjōjanakatta

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Noun
, 
Da Copula

The past negative form of 経済性向上

1. Wasn't economic improvement.; Wasn't improved efficiency.

Past/Perfective
, 
Negative

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経済性向上じゃなかった

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