Russian ⇄ Chinese English French

скрытое наблюдение stresses
data.prot.	discrete surveillance
sec.sys.	covert observation; covert surveillance; discreet observation; discreet surveillance; discreet viewing; silent surveillance; private monitoring

скрытое наблюдение: 14 phrases in 7 subjects

Environment	1
General	1
Information security and data protection	3
Makarov	2
Marketing	1
Military	1
Security systems	5