surveillance
US /sɚˈveɪ.ləns/
UK /sɚˈveɪ.ləns/
1.
监视, 监控
close observation, especially of a suspected spy or criminal
:
•
The police kept the suspect under constant surveillance.
警方对嫌疑人进行了持续的监视。
•
CCTV cameras are used for public surveillance.
闭路电视摄像机用于公共监控。