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сохранять бдительностьstresses
gen. bright to keep a bright lookout; be on the alert (defense.gov Alex_Odeychuk)
amer. remain on the lookout (Val_Ships); stay alert (Val_Ships)
Makarov. keep a bright lookout
sec.sys. remain vigilant (of ... – по поводу ... Alex_Odeychuk)
сохранять бдительность: 2 phrases in 2 subjects
Occupational health & safety1
Security systems1