infiltrate
🇺🇸
/ˈɪnfɪltreɪt/
🇬🇧
/ˈɪnfɪltreɪt/
to secretly enter a place or group to gather information
The undercover cop infiltrated the gang to learn their plans.
卧底警察渗透到帮派中,以了解他们的计划。
to gradually enter a substance or material
Water infiltrates the ground, providing moisture for plants.
水渗透到地面,为植物提供水分。