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過 か硫酸 りゅうさんではありませんでした
karyūsandewārimasendeshita

敬
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Noun
, 
Desu Copula

The polite, past negative form of 過硫酸

1. Was not persulfate.; Was not potassium persulfate.

Past/Perfective
, 
Negative
, 
Polite
, 
Formal Register

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過硫酸ではありませんでした

過硫酸ではありませんでした【かりゅうさんでわありませんでした】 Activity

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