Last Updated：2025/12/02
Sentence
全国の研究所は地域ごとに異なる水の硬度レベルを報告しており、それが新たに設置されたろ過システムの性能に影響を与えました。
Quizzes for review
Laboratories across the country reported varying water hardnesses, which affected the performance of the newly installed filtration systems.
See correct answer
Laboratories across the country reported varying water hardnesses, which affected the performance of the newly installed filtration systems.
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