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ケイ酸 けいさんじゃありませんでした
keisanjārimasendeshita

敬
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Noun
, 
Desu Copula

The polite, past negative form of ケイ酸

1. It was not silicon.

Past/Perfective
, 
Negative
, 
Polite
, 
Terminal Form
, 
Chemistry

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ケイ酸じゃありませんでした

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