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エフィシェンシーじゃなかったです
efishenshiijanakattadesu

敬
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Noun
, 
Desu Copula

The polite, past negative form of エフィシェンシー

1. Wasn't efficient.; Wasn't effective.

Past/Perfective
, 
Negative
, 
Polite
, 
Casual Register

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