alert
UK/ә'lә:t/US
TOEFLGREB2
Definitions
v.
To warn someone of a danger or situation requiring attention
警告，提醒
n.
A warning signal or state of readiness for danger
警报；戒备状态
adj.
Watchful and ready to respond to danger or change; mentally quick
警觉的，机敏的
Root Breakdown
Loanwordalertother
=alert
Common Collocations
- 1.stay alert保持警觉
- 2.alert system警报系统
- 3.alert status警报状态
Example Sentences
- 1.
Security staff remained alert throughout the night to prevent theft.
- 2.
The security guard was alert to any suspicious activity.
- 3.
An alert about severe weather was broadcast to all residents.
- 4.
A weather alert warned of incoming storms.