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一 いち酸化 さんか二 に窒素 ちっそでした
ichisankani chissodeshita

敬
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Noun
, 
Desu Copula

The polite past form of 一酸化二窒素

1. It was nitrous oxide.

Past/Perfective
, 
Polite
, 
Chemistry

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一酸化二窒素でした

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