to alert
01
警告, 提醒
to warn someone of a possible danger, problem, or situation that requires their attention
Transitive: to alert sb of a danger or problem | to alert sb to a danger or problem
语法信息
形态构成
简单词
动作动词
规则
现在时
alert
第三人称单数
alerts
现在分词
alerting
一般过去时
alerted
过去分词
alerted
例子
The security system alerted the homeowners to a possible break-in with a loud alarm.
安全系统用响亮的警报警告房主可能有闯入。
alert
语法信息
形态构成
简单词
性质形容词
最高级
most alert
比较级
more alert
可分级
例子
The alert security guard spotted the intruder before they could enter the building.
警觉的保安在入侵者进入大楼之前就发现了他。
02
警惕的, 警觉的
actively observing or watchful, often for danger or specific events
例子
Security guards were alert during the public event.
保安人员在公共活动期间保持警惕。
03
敏捷的, 机警的
quick, energetic, or lively in action or movement
例子
She gave an alert response to the unexpected question.
她对意外的问题给出了机敏的回答。
Alert
01
警报, 警告
a warning intended to make someone more aware of potential danger
语法信息
有生性状态
抽象
形态构成
复合词
可数
复数形式
alerts
例子
The storm alert advised residents to stay indoors.
风暴警报建议居民待在室内。
02
警报, 危险信号
an automatic signal, often a sound, indicating danger
例子
The fire alarm is an alert for immediate evacuation.
火灾警报是立即疏散的警报。
03
警报, 警戒状态
a situation where people are ready to confront a threat
例子
The soldiers were placed on high alert as intelligence suggested an imminent attack from enemy forces.
由于情报显示敌军即将发动攻击，士兵们被置于高度警戒状态。
