1
the rot + set in
set in 的主语常用 the rot，表示坏情况开始出现并逐渐恶化；rot 在此是不可数名词。
The rot set in when the company stopped innovating.
当公司停止创新时，衰败就开始了。
腐烂；腐朽；腐败
rots — plural of rot
先理解核心含义，再看它在真实句子里的用法。
腐烂；腐朽；腐败
the process of decay or putrefaction, often with a bad smell
The rot set in when the company stopped innovating.
当公司停止创新时，衰败就开始了。
腐烂的过程；腐败
The process of becoming rotten; putrefaction.
通常伴有难闻气味的腐烂状态
a state of decay usually accompanied by an offensive odor
腐烂物质；腐物。
Decaying matter.
(生物学)由细菌或真菌作用引起的腐烂过程
(biology) the process of decay caused by bacterial or fungal action
The wooden fence had begun to rot from constant exposure to rain.
木栅栏因持续遭受雨淋开始腐烂。
He dismissed the rumor as complete rot, not worth discussing.
他称这谣言纯属胡说，不值得讨论。
Gardeners must regularly remove rots from fruit trees to prevent disease spread.
园丁必须定期清除果树上的腐烂部分，以防疾病蔓延。
set in 的主语常用 the rot，表示坏情况开始出现并逐渐恶化；rot 在此是不可数名词。
The rot set in when the company stopped innovating.
当公司停止创新时，衰败就开始了。
固定搭配，意为“阻止局面继续变坏”，常用于商业、政治等语境。
The new manager was hired to stop the rot.
新经理被请来扭转颓势。
英式英语的非正式表达，表示“说蠢话、胡说八道”；rot 为不可数名词，不加冠词。
Don't talk rot; just give me the facts.
别胡说八道；把事实告诉我就行。
Not this
The fruit is rot.
Use this
The fruit is rotten.
rot 是名词，表示腐烂的过程或状态，不能放在 be 动词后作表语；要描述水果已经烂了，应使用形容词 rotten。汉语“烂”没有词形变化，容易直接套用名词。
Not this
He talked a rot at the meeting.
Use this
He talked rot at the meeting.
rot 在表示“胡说、废话”时是不可数名词，不能用不定冠词 a。汉语的“一个”容易被直译成 a，但这里应省略冠词。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
干腐病；干朽
The wooden floor had dry rot and needed replacing.
木地板得了干腐病，需要更换。
根腐病
Excessive watering can lead to root rot in many plants.
浇水过多会导致许多植物根腐病。
阻止恶化；防止颓势
The new policy is meant to stop the rot in public services.
新政策旨在阻止公共服务领域的情况恶化。
开始腐烂；开始走下坡路
Once the fruit is damaged, rot sets in quickly.
水果一旦破损，很快就会开始腐烂。
说胡话；胡说八道
Don't talk rot — that is simply not true.
别胡说八道——那根本不是真的。
腐烂的气味
The old house had a faint smell of rot.
那座老房子有一股淡淡的腐烂气味。
开始变坏；开始衰败
The rot set in when the school stopped listening to parents.
当学校不再听取家长意见时，情况便开始变坏。
阻止恶化；制止颓势
The directors acted quickly to stop the rot.
董事们迅速采取行动，以阻止情况恶化。
说傻话；胡说八道
He is talking rot again — totally ignoring the facts.
他又在胡说八道了，完全无视事实。
Use rots naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记法：把rot看成rotten（腐烂的）的开头，脑中浮现烂果发出臭味的样子，rot就是腐烂/腐物。
语域：mixed 常见场景：生物学或医学描述、食物、木材等腐烂、日常口语（指胡说八道） 该词作名词时，表示“腐烂、腐败”多为中性或较正式用词，常用于生物学、食品或材料等语境；表示“胡说、废话”时则多用于口语。具体含义需根据上下文判断。
作为不可数名词时指腐烂的过程或状态；作为可数名词时通常指具体的腐烂实例或腐朽的言论（口语中常用复数）
Dictionary facts from AI_FALLBACK, ECDICT, WIKTIONARY, WORDNET.