1
infest sth
主动语态，主语是害虫、老鼠等有害生物，宾语是受侵害的地点或生物体。
Mice infest the kitchen.
老鼠大批出没于厨房。
大批出没；侵扰
infests — third person singular of infest
先理解核心含义，再看它在真实句子里的用法。
大批出没；侵扰
to invade in great numbers
Mice infest the kitchen.
老鼠大批出没于厨房。
大量令人不快地栖息于某处；侵扰、骚扰。
To inhabit a place in unpleasantly large numbers; to plague, harass.
侵入宿主植物或动物。
To invade a host plant or animal.
infest
Base
原形
infests
3rd person
第三人称单数
infesting
-ing
现在分词
infested
Past
过去式
infested
Past participle
过去分词
Rats infest the old warehouse.
老鼠大批出没于旧仓库。
Parasites infested the dog's fur.
寄生虫侵扰了狗的皮毛。
The kitchen has been infested with ants.
厨房已被蚂蚁入侵。
infest 指害虫、寄生虫等大批出没或寄生，常含贬义。
Rats have infested the old warehouse, so we need to call pest control.
老鼠已经大批出没于那座旧仓库，所以我们得打电话叫灭鼠公司来。
The campsite was infested with mosquitoes, making it impossible to sleep outside.
营地遭到蚊子大量侵扰，让人根本没法在户外睡觉。
These apple trees are infested with aphids, so the farmer is spraying them today.
这些苹果树正遭受蚜虫大量侵害，所以农夫今天要给它们喷洒农药。
主动语态，主语是害虫、老鼠等有害生物，宾语是受侵害的地点或生物体。
Mice infest the kitchen.
老鼠大批出没于厨房。
被动语态 be infested with 是描述某地或某生物受到侵扰的常见结构，with 后接有害生物。
The beach was infested with jellyfish.
海滩被水母侵扰。
Not this
The wound was infested with bacteria.
Use this
The wound was infected with bacteria.
infest 用于害虫等大量侵扰，而细菌引起的是感染，动词应用 infect；中文的“感染”对应 infect。
Not this
The kitchen was infested cockroaches.
Use this
The kitchen was infested with cockroaches.
be infested 是被动结构，施动者须用介词 with 引出，不能说 be infested someone/something；补上 with 后句子才完整。
Not this
Cockroaches infested in the kitchen.
Use this
Cockroaches infested the kitchen.
infest 是及物动词，后直接接地点名词作宾语，不接介词 in；中文的“在厨房里出没”要改成“the kitchen”作宾语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
被（老鼠、害虫等）大批侵扰；到处都是
The kitchen was infested with ants after the flood.
洪水过后，厨房里到处都是蚂蚁。
（害虫等）严重泛滥的；重度受侵扰的
The campsite was heavily infested with mosquitoes, so we slept in the car.
这个营地蚊虫猖獗，所以我们睡在车里。
鼠患严重的；老鼠成灾的
The inspectors shut down the rat-infested restaurant.
检查人员查封了那间鼠患严重的餐馆。
大批出没于某地；在某地泛滥
Locusts infest the region every few years.
蝗虫每隔几年就会在这个地区泛滥一次。
寄生于宿主
Tapeworms infest the intestines of infected animals.
绦虫寄生在受感染动物的肠道里。
（被讨厌的人或物）大批侵扰；布满
The old house was infested with rats.
那座老房子里老鼠成灾。
《鼠巢之患》
The title of a 2019 thrash-metal album by the Australian band King Gizzard & the Lizard Wizard; it uses 'infest' literally, meaning to invade or overrun a place in large numbers.
这是澳大利亚乐队 King Gizzard & the Lizard Wizard 2019 年一张鞭挞金属专辑的标题；这里用到了 infest 的本义，即大量入侵或涌满某处。
Use infests naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
联想 in + fest（节日）：害虫像过节一样成群涌来，侵扰寄生。
语域：formal 常见场景：新闻报道、科普文章中描述鼠害、虫害等大量侵扰、医学或生物学中描述寄生虫寄生于宿主 这个词比较正式，通常用于书面语或学术语境，日常口语中较少直接使用。指害虫等大批出没时多译为“侵扰”，指寄生虫寄居时多译为“寄生”，整体语气偏正式。
以下单词与 infest 的结尾发音相同（/ɛst/）：best, test, rest, guest, chest, nest。注意不要把 feast /fiːst/、least /liːst/ 等拼写相似的词误读为 /ɛst/，它们读音不同。
Dictionary facts from ECDICT, WIKTIONARY.