sludge

• 指浓稠、黏滞的物质，常为固体或半固体沉淀物，多产生于污水处理或其他工业过程中。

A noun referring to a thick, viscous substance, often the solid or semi-solid residue produced during sewage treatment or other industrial processes.

不可数

1. Sewage precipitateB2formaltechnical

   The thick, semi-solid material that settles out during the treatment of sewage or industrial wastewater.

   污水污泥

   • The treatment plant processes the sludge into fertilizer.
   • Workers removed the sludge from the bottom of the settling tank.
   • Proper disposal of industrial sludge is essential for environmental safety.

   同义词muckresiduesediment

2. Thick viscous matterB1informal

   Any heavy, sticky, or muddy substance, often unpleasant or messy.

   浓稠黏性物质

   • The riverbed was covered in a thick, black sludge.
   • After the rain, the path turned into a slippery sludge.
   • The mechanic had to clean the sludge out of the engine.

   同义词drossmiremuckmudoozeresiduesedimentslimeslopslush