범죄 혐의자나 특정 대상을 보안 또는 수사 목적으로 면밀히 지켜보는 행위.
The close observation of a person or group, especially one under suspicion of criminal activity or for security purposes.
예문:
"The suspect was kept under constant surveillance by undercover agents for several weeks."
"The installation of high-definition surveillance cameras has significantly reduced crime in the neighborhood."
"Civil rights groups expressed concern over the government's increased electronic surveillance of citizens."
관리, 지시 또는 보호를 목적으로 행동, 활동 또는 정보를 체계적으로 모니터링하는 것.
The systematic monitoring of behavior, activities, or information for the purpose of management, direction, or protection.
예문:
"Effective disease surveillance is essential for identifying and controlling potential epidemics before they spread."
"The company implemented network surveillance to ensure data security and optimize system performance."