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活性かっせい酸素さんそでした
kasseisansodeshita

敬
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Noun
, 
Desu Copula

The polite past form of 活性酸素

1. Was active oxygen.

Past/Perfective
, 
Polite
, 
Chemistry

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活性酸素でした

活性酸素でした【かっせいさんそでした】 Activity
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