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硫化 りゅうか水素 すいそではありませんでした
ryūkasuisodewārimasendeshita

敬
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Noun
, 
Desu Copula

The polite, past negative form of 硫化水素

1. Was not hydrogen sulfide.

Past/Perfective
, 
Negative
, 
Polite
, 
Formal Register

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硫化水素ではありませんでした

硫化水素ではありませんでした【りゅうかすいそでわありませんでした】 Activity

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