surveillance
🇺🇸
/sɜːrˈveɪləns/
🇬🇧
/sɜːˈveɪləns/
noun
C1
the act of watching someone or something closely, often to prevent crime or gather information
Police used surveillance cameras to watch the building for suspicious activity.
警方使用監視攝影機密切監視建築物，以觀察可疑活動。
translation
監視
詞形變化
Plural
surveillances