1
infiltrate sth
作及物动词时，后直接接被潜入的组织、团体或机构。
He managed to infiltrate the organization and gather information.
他设法潜入了该组织并收集情报。
潜入；打入
infiltrated — past of infiltrate
先理解核心含义，再看它在真实句子里的用法。
潜入；打入
to enter a group or organization secretly, especially in order to spy on its members
He managed to infiltrate the organization and gather information.
他设法潜入了该组织并收集情报。
暗中渗透、进入或接近
To surreptitiously penetrate, enter or gain access to.
使以此方式渗入
To cause to penetrate in this way.
经过滤穿过某物
To pass through something by filtration.
使(液体)经过滤通过某物
To cause (a liquid) to pass through something by filtration.
infiltrate
Base
原形
infiltrates
3rd person
第三人称单数
infiltrating
-ing
现在分词
infiltrated
Past
过去式
infiltrated
Past participle
过去分词
The army infiltrates enemy territory at night.
军队在夜间潜入敌方领土。
The spy infiltrated the organization last year.
那名间谍去年渗透进了该组织。
The rainwater is infiltrating the cracks in the wall.
雨水正渗入墙壁的裂缝中。
注意：infiltrate 常指液体渗入或人员秘密潜入，过去式和过去分词均为 infiltrated。
The writer infiltrated a local cooking class to research her novel.
那名作家混进当地一个烹饪班，以便为自己的小说搜集素材。
Reporters tried to infiltrate the film studio, but security stopped them.
记者们试图潜入电影制片厂，但被保安拦下了。
He infiltrated the group chat by using a fake account.
他利用虚假账号混进了那个群聊。
作及物动词时，后直接接被潜入的组织、团体或机构。
He managed to infiltrate the organization and gather information.
他设法潜入了该组织并收集情报。
作不及物动词时，常与 into 连用，表示液体或气体自然渗入。
Rainwater slowly infiltrated into the soil.
雨水慢慢渗入了土壤。
此用法表示使液体进入或渗透某处，常见于医学等正式语境。
The doctor infiltrated the anesthetic into the wound.
医生将麻醉剂浸润到伤口中。
Not this
The journalist infiltrated in the rebel group.
Use this
The journalist infiltrated the rebel group.
infiltrate 表示“潜入（某组织）”时为及物动词，直接接宾语，不需要加介词 in。若使用不及物用法，应接 into，但此句用直接宾语更自然。
Not this
The commander infiltrated a spy to the enemy camp.
Use this
The commander infiltrated a spy into the enemy camp.
表示“派某人潜入某处”时，固定搭配是 infiltrate sb. into sth.，目的地用 into 强调进入内部，不能用 to。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
打入某组织内部
The spy managed to infiltrate the organization.
这名间谍设法打入了该组织内部。
渗透敌方防线
The troops infiltrated enemy lines under cover of darkness.
部队在夜幕掩护下渗透了敌方防线。
潜入网络系统
Hackers infiltrated the company's network.
黑客侵入了公司的网络。
渗入土壤
Rainwater slowly infiltrates the soil.
雨水慢慢渗入土壤。
打入…的队伍；混入…内部
The spy spent years trying to infiltrate the ranks of the secret service.
这名间谍花了多年时间试图打入特工部门的内部。
混入当权派；打入体制内部
Activists aimed to infiltrate the establishment and change it from within.
活动人士旨在打进制体制内部，从内部进行改变。
渗入主流；逐渐成为主流
This new style of music has slowly infiltrated the mainstream over the past decade.
这种新音乐风格在过去十年中慢慢渗入主流。
Use infiltrated naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
记法：in（进入）+ filtrate（过滤）→ 像液体滤过缝隙一样悄悄渗入，喻指秘密打入内部。
语域：formal 常见场景：espionage / undercover operations、organizational security infiltrate 多用于正式或书面语境，比较常见于描述秘密打入或混入组织、团体、机构等场景；日常口语中很少用。
No word here rhymes exactly with infiltrate (/ɪnˈfɪl.treɪt/). The -trate words penetrate, concentrate, and demonstrate share the spelling -trate and a similar final /treɪt/ or /streɪt/ sound, but their stressed syllables differ, so they are lookalikes rather than true rhymes. Filter and filtration are related lookalikes but sound clearly different.
Dictionary facts from ECDICT, WIKTIONARY.