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sludge + verb (e.g., accumulates, forms)
sludge 作为不可数名词，谓语动词用单数。
Sludge accumulates in the pipes over time.
污泥随时间在管道中积聚。
黏稠物；烂泥；软泥
先理解核心含义，再看它在真实句子里的用法。
黏稠物；烂泥；软泥
Any thick, sticky, semi-solid substance, such as soft mud or ooze.
Sludge accumulates in the pipes over time.
污泥随时间在管道中积聚。
从液体悬浮中分离出的固体
Solids separated from suspension in a liquid.
污水处理产生的沉淀物
the precipitate produced by sewage treatment
工业、水处理或废水处理过程中留下的残余半固体物质
A residual semi-solid material left from industrial, water treatment, or wastewater treatment processes.
任何厚重粘稠的物质
any thick, viscous matter
The drain was clogged with thick black sludge.
排水管被厚厚的黑色黏稠物堵住了。
After the heavy rain, a layer of brown sludge covered the garden path.
大雨过后，一层棕色烂泥覆盖了花园小径。
Workers removed the oily sludge from the storage tank.
工人们把储罐里油乎乎的淤渣清理了出来。
sludge 作为不可数名词，谓语动词用单数。
Sludge accumulates in the pipes over time.
污泥随时间在管道中积聚。
The workers removed the sludge from the tank.
工人们从水箱中清除了污泥。
常用 a [量词] of sludge 表示污泥的量。
A large amount of sludge was discharged into the river.
大量污泥被排放到河里。
Not this
After the storm, the streets were covered with sludge.
Use this
After the storm, the streets were covered with mud.
“sludge”特指工业或污水处理产生的沉淀物，不指一般的湿泥；表示自然湿泥时应用“mud”。
Not this
The treatment plant produces many sludges every day.
Use this
The treatment plant produces a lot of sludge every day.
“sludge”作为物质名词通常不可数，表示“大量沉淀物”应使用“a lot of sludge”而非复数形式。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
污水污泥
The plant converts sewage sludge into fertilizer.
工厂将污水污泥转化为肥料。
有毒污泥
The river was polluted by toxic sludge from the factory.
河水被工厂的有毒污泥污染了。
污泥处理
New equipment has improved sludge treatment efficiency.
新设备提高了污泥处理效率。
黏稠的泥浆
The drain was clogged with thick sludge.
下水道被黏稠的泥浆堵住了。
污泥处置
The city is facing high costs for sludge disposal.
该市正面临高昂的污泥处置费用。
活性污泥
Activated sludge is used to clean wastewater.
活性污泥用于净化废水。
Use sludge naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记忆联想：s 开头像 sewage（污水），后面像一坨厚重黏稠的东西；看到 sludge 就想到污水处理后沉降的污泥。
语域：mixed 常见场景：sewage treatment、industrial waste processing、boiler maintenance、everyday speech sludge 的语体视语境而定：在环保、工程或工业描述中通常较正式；在日常口语中也可泛指黏稠的污物。建议根据场景选择正式或普通表达。
通常作不可数名词，指不同种类时可数，如：industrial sludges
Dictionary facts from ECDICT, WIKTIONARY.