Surveillance is the careful watching of someone, especially by an organization such as the police or the army.
He was arrested after being kept under constant ~...
Police keep track of the kidnapper using electronic ~ equipment.
N-UNCOUNT
Surveillance is the careful watching of someone, especially by an organization such as the police or the army.
He was arrested after being kept under constant ~...
Police keep track of the kidnapper using electronic ~ equipment.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012