Last Updated：2025/11/20
Sentence
工場の廃水から過塩素酸塩が検出され、地域の水源の汚染が懸念された。
Quizzes for review
The factory's wastewater contained perchlorate, raising concerns about contamination of the local water supply.
See correct answer
The factory's wastewater contained perchlorate, raising concerns about contamination of the local water supply.
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Related words
perchlorate
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