hongsugye
flood gauge
pluviomètre ; mesureur de pluie
홍수계는 강의 수위를 측정하는 데 사용됩니다.
Hongsugye-neun gang-ui suwi-reul cheugjeonghaneun de sayongdoemnida.
The flood gauge is used to measure the water level of the river.
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