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効率 こうりつ向上 こうじょうじゃない
kōritsukōjōjanai

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Noun
, 
Da Copula
, 
Negation Auxiliary

The negative form of 効率向上

1. Not efficiency improvement.; Not about improving efficiency.

Negative

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効率向上じゃない

効率向上じゃない【こうりつこうじょうじゃない】 Activity

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