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過 か硼酸 ほうさんじゃなかった
kahōsanjanakatta

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Noun
, 
Da Copula

The past negative form of 過硼酸

1. Wasn't borax.; Wasn't sodium borate.

Past/Perfective
, 
Negative
, 
Chemistry

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過硼酸じゃなかった

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