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2)
#104,687
すいしつけんさ
Meaning
    1. water-quality test
      We recommend that mains water have a water-quality test carried out once a year, well water twice a year.
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3)
#119,025
すいしつおせん
Meaning
    1. ①
      water pollution
      The lake is notorious for its contamination.
    1. ①
      EN Water pollution is the contamination of water bodies (e.
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