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slough off sth
动词短语，表示“摆脱、丢弃”；也可写作 slough sth off。
The company sloughed off its outdated policies.
公司摒弃了过时的政策。
泥沼；烂泥坑
先理解核心含义，再看它在真实句子里的用法。
泥沼；烂泥坑
a hollow filled with mud
The company sloughed off its outdated policies.
公司摒弃了过时的政策。
蛇或其他爬行动物蜕下的皮。
The skin shed by a snake or other reptile.
沼泽或泥泞的地区。
A marshy or muddy area.
伤口或溃疡上的死皮。
Dead skin on a sore or ulcer.
沮丧的状态；消沉。
A state of depression.
We had to cross a muddy slough on the way to the farm, and my boots were soaked.
我们不得不在去农场的路上穿过一片泥泞的沼泽，我的靴子全湿透了。
The abandoned lot turned into a slough after the spring rains.
春天的雨后，那片废弃的空地变成了一处泥沼。
A narrow slough separated the two pastures, so the cattle sometimes waded across.
一条狭窄的沼泽将两块牧场分开，牲口有时会蹚过去。
动词短语，表示“摆脱、丢弃”；也可写作 slough sth off。
The company sloughed off its outdated policies.
公司摒弃了过时的政策。
不及物动词，后接 through，表示“在泥泞中跋涉”。
The hikers sloughed through the wet marsh.
徒步旅行者艰难地穿过湿漉漉的沼泽。
名词用法，表示动物蜕下的皮或壳，常与 of 连用。
The slough of the snake was found in the grass.
草丛中发现了蛇蜕。
Not this
The soldiers sloughed the muddy field.
Use this
The soldiers sloughed through the muddy field.
当 slough 表示“在泥浆/泥泞中艰难跋涉”时是不及物动词，不能直接接宾语；要表达“穿过某片泥泞地”，必须用介词 through 连接地点（slough through sth）。原句把 the muddy field 当作宾语，意思会变成“使田野陷入泥沼”，不是想表达的“跋涉”。
Not this
She sloughed off it.
Use this
She sloughed it off.
slough off（摆脱、抛弃）是“动词 + 副词”型的短语动词；宾语若为代词，必须放在动词与副词之间（slough it off），不能放在整个短语之后。说 sloughed off it 语序错误，改为 sloughed it off 才符合英语代词宾语的规则。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
蜕去；摆脱；抛弃
The snake slowly sloughed off the old skin.
这条蛇慢慢地蜕去了旧皮。
蛇蜕
We found a dried snake slough on the rocks.
我们在岩石上发现了一张干蛇蜕。
绝望的泥沼；极度消沉
Losing the championship cast him into a slough of despond.
失去冠军使他陷入了极度消沉。
在泥泞中跋涉
The soldiers sloughed through the mud to reach the camp.
士兵们在泥泞中跋涉才到达营地。
绝望的泥沼；极度沮丧的状态
After losing everything, he fell into a slough of despond.
失去一切后，他陷入了极度沮丧的状态。
摆脱；抛弃；蜕去
You need to slough off old habits and adapt to the new environment.
你需要改掉旧习惯，适应新环境。
那个泥沼名叫绝望。
In John Bunyan's 1678 allegory *The Pilgrim's Progress*, the hero Christian falls into the Slough of Despond, a bog that symbolizes despair over sin. The name has become an English idiom for a state of hopeless depression.
在约翰·班扬1678年的寓言《天路历程》中，主人公基督徒陷入“绝望泥沼”，那象征着因罪恶感而生的绝望。这个名字后来成为英语习语，指极度沮丧消沉的状态。
Use slough naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象蛇在泥沼（slough）里蜕皮（slough off）：'嘶捞'一声，旧皮脱落。
语域：formal 常见场景：formal descriptive writing、literary narrative slough 作名词表示“泥沼/死水沼泽”时，通常用于正式或文学性书面语，多见于景物描写或抽象比喻；日常口语中较少使用。
slough /slaʊ/ rhymes with bough /baʊ/ and plough /plaʊ/. Beware the other -ough words: though /ðoʊ/, through /θruː/, cough /kɒf/, and rough /rʌf/ all sound different.
Dictionary facts from ECDICT, WIKTIONARY.