shèn​tòu HSK7

infiltrate

渗透 (滲透) shèn​tòu
infiltrate verb
to secretly enter an organization or territory for hostile or espionage purposes

Enemy agents are trying to infiltrate our internal systems.

osmosis verb
the chemical process of molecules passing through a semipermeable membrane

Reverse osmosis technology is commonly used to purify drinking water.

penetrate verb
to gradually spread through or influence a population, market, or culture
permeate verb
to physically seep into or pass through a porous substance

A lot of sweat has soaked through his vest.

Frequency

Movie subtitles
3.82 per million appears in 2% of films
Written text
14.9 per million

Details

HSK 2.0
Level 6
HSK 3.0
Level 7

Sources

Definitions
CC-CEDICT