infiltrate

v.渗透，秘密潜入

inferable, inference, inferential, inferentially, inferior, inferiority, inferiority complex, infernal, infernally, inferno, infertile, infertility, infest, infestation, infidel, infidelity, infield, infielder, infighting, infill, infiltration, infiltrator, infinite, infinitely, infinitesimal, infinitesimally, infinitive, infinitude, infinity, infirm, infirmary, infirmity, inflame, inflamed, inflammability, inflammable, inflammation, inflammatory, inflatable, inflate,