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有効 ゆうこう利用 りようではありませんでした
yū kōriyōdewārimasendeshita

敬
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Noun
, 
Desu Copula

The polite, past negative form of 有効利用

1. Was not effectively utilized.; Was not used effectively.

Past/Perfective
, 
Negative
, 
Polite
, 
Formal Register

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有効利用ではありませんでした

有効利用ではありませんでした【ゆうこうりようでわありませんでした】 Activity

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