surveillance
US /sɚˈveɪ.ləns/
UK /sɚˈveɪ.ləns/
1.
監視, 監控
close observation, especially of a suspected spy or criminal
:
•
The police kept the suspect under constant surveillance.
警方對嫌疑人進行了持續的監視。
•
CCTV cameras are used for public surveillance.
閉路電視攝像機用於公共監控。