прихований пасивний опір
island of resistance / pocket of resistance
resistance, to break (down) resistance
clandestine
clandestine operation; covert operation
clandestine border crossing
clandestine operation
clandestine organization
experience with clandestine work
keeper of a clandestine address
give clandestine assistance
clandestine agencies
clandestine agent
clandestine assembly area
clandestine force
clandestine operations
clandestine patrol base
clandestine reconnaissance
clandestine warfare
heat passive homing guidance system
image-intensifying Passive Driving Periscope (PDP)
passive
passive air defense
passive armor
passive counterintelligence measures
passive deception measures
passive defence
passive defense measure
passive defenseequipment
passive defenses
passive detector
passive deterrents
passive electronic countermeasures