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⑥下水道の新たな役割(英語:英語音声) 6. New Roles of Sewerage
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上部利用事業(雨天時貯留池の上部に高層ビル)
Utilization of Space Above Sewerage Facilities
(High-Rise Building Built Above Stormwater Storage Tank)
再生水利用事業(処理水の有効利用)
Utilization of Reclaimed Water
(E ective Use of Treated Water)

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