Sludge
01
the semi-solid residue produced during sewage or wastewater treatment
예시들
The treatment plant removes sludge from the water before discharge.
Engineers studied the composition of the sludge to improve filtration.
02
any heavy, soft, wet, and often sticky material
예시들
Mudslides left a layer of sludge over the road.
The machine 's filter was clogged with sludge.
