surveillance

S2 W2

in Vietnamese Quan sát, giám sát

BrE /səˈvailəns/ AmE /sərˈveɪləns/

noun en → vi

1 OBSERVE/SPY [uncountable] B1

Quan sát, giám sát

the act of watching someone or something, especially secretly and for a long time

  • surveillance of somebody/something

Collocations surveillance camera · surveillance system

  • The police have put the suspect under surveillance.

    Cảnh sát đã đặt nghi phạm dưới sự giám sát.

2 SECURITY [uncountable] B1

An ninh, bảo vệ

the act of watching and controlling a place or area to prevent crime or unauthorized access

  • surveillance in/around somewhere

Collocations security surveillance · closed-circuit television (CCTV) surveillance

  • The building has 24-hour security surveillance.

    Tòa nhà có hệ thống giám sát an ninh hoạt động suốt 24 giờ.