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セシウム原子 げんし時計 とけいではありませんでした
seshiumugenshitokeidewārimasendeshita

敬
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Noun
, 
Desu Copula

The polite, past negative form of セシウム原子時計

1. It was not a cesium atomic clock.

Past/Perfective
, 
Negative
, 
Polite
, 
Formal Register

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セシウム原子時計ではありませんでした

セシウム原子時計ではありませんでした【セシウムげんしとけいでわありませんでした】 Activity

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