Last Updated：2025/12/05
Sentence
研究所は汚染を防ぐためにラジウム試料を鉛で裏打ちされた容器に保管した。
Quizzes for review
The laboratory stored the radiums in lead-lined containers to prevent contamination.
See correct answer
The laboratory stored the radiums in lead-lined containers to prevent contamination.
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