Last Updated：2025/11/25
Sentence
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Laboratory measurements showed that caesium-137 levels in the soil near the reactor remained above safety limits.
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Laboratory measurements showed that caesium-137 levels in the soil near the reactor remained above safety limits.
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Related words
caesium-137
Noun
uncountable
Japanese Meaning
セシウム137は、セシウムの放射性同位体で、55個の陽子と82個の中性子を持つ元素である。 / 主に核分裂によって生じる核分裂生成物として形成される放射性物質である。
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