The conservation team had to infiltrate the dense rainforest canopy to observe the rare orchid's pollination cycle without disturbing its habitat.
保护团队不得不潜入茂密的雨林树冠层，在不干扰其栖息地的情况下观察稀有兰花的授粉周期。
Which choice best defines “infiltrate”?
A — To enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information.. “infiltrate” means to enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information..
Which word means “to enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information.”?
B — infiltrate. “infiltrate” means to enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information..
infiltrate — to enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information.. In Chinese: 渗透，潜入.
infiltrate is pronounced /ˈɪnfɪltreɪt/.
The conservation team had to infiltrate the dense rainforest canopy to observe the rare orchid's pollination cycle without disturbing its habitat. (保护团队不得不潜入茂密的雨林树冠层，在不干扰其栖息地的情况下观察稀有兰花的授粉周期。)
penetrate, permeate, invade — all close in meaning to infiltrate (to enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information.).
withdraw, retreat — each the opposite of infiltrate (to enter or gain access to (an organization, place, etc.) surreptitiously and gradually, especially in order to acquire secret information.).
Yes. infiltrate is on the SAT Prep Difficult list — the higher-register words that decide the hard questions. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
in(enter)+filtr(filter)+ate(make) → make enter through filtering → infiltrate.