infiltrating：释义

To pass (troops, for example) surreptitiously into enemy-held territory. To penetrate with hostile intent: infiltrate enemy lines; terrorists that had infiltrated the country.

To enter or take up positions in gradually or surreptitiously, as for purposes of espionage or takeover: infiltrated key government agencies with spies.

To cause (a liquid, for example) to permeate a substance by passing through its interstices or pores.

To permeate (a porous substance) with a liquid or gas.