溝こう溜りゅう

noun

drain and pool for collecting sewage

Technical term for a combined drainage channel and collection basin used in sewage or wastewater systems.

• この地ち域いきの溝こう溜りゅうは定てい期き的てきに清せい掃そうが必ひつ要ようです。

  The drain and pool in this area need regular cleaning.