Word · Frequency #4966
alert
警报；警告
A warning or alarm that tells people about danger.
- 1.
An alarm.
警报。
- 2.
condition of heightened watchfulness or preparation for action
高度警觉或准备行动的状态
- 3.
A notification of higher importance than an advisory.
一种重要性高于咨询的通知。
- 4.
a warning serves to make you more alert to danger
警告使你对危险更加警觉
- 5.
A state of readiness for potential combat.
备战状态。
- 6.
an automatic signal (usually a sound) warning of danger
自动信号(通常是声音)警告危险
- 7.
Synonym of bell (“bell character”).
bell(“响铃字符”)的同义词。
警觉；戒备；重要通知；警示通知；响铃字符；警报。；高度警觉或准备行动的状态
In use
The soldiers were placed on high alert after the suspicious activity was reported.
The weather service issued a tornado alert for the entire region.
Residents remained on alert for further aftershocks following the earthquake.
bombers were put on alert during the crisis
be on alert for sth
The army is on alert for any possible attack.
军队对任何可能的袭击保持警觉。
issue an alert
也可用 send out an alert。
The government issued an alert about the approaching storm.
政府发布了关于即将到来的风暴的警报。
Connections
Collocations
- on the alert
- 保持警惕；处于戒备状态
- Police are on the alert for suspicious activity.警方保持警惕，注意可疑活动。
- sound an alert
- 发出警报
- The system sounds an alert when the door is opened.门被打开时，系统会发出警报。
- issue an alert
- 发布警报；发出警告
- The government issued an alert about the approaching storm.政府发布了关于风暴来袭的警报。
- red alert
- 红色警报；紧急戒备状态
- The military was placed on red alert.军方进入了红色警戒状态。
- security alert
- 安全警报；安全警告
- The airport was put on security alert after a suspicious package was found.发现可疑包裹后，机场进入了安全警戒状态。
- flood alert
Learner notes
Memory Tip
记忆联想：想象警报（alert）响起，你立刻绷紧神经、竖起耳朵准备行动——这就是 alert 的‘警觉/戒备’。
Context & Register
语域：mixed 常见场景：emergency warning systems、military or police readiness、mobile and software notifications alert 作名词时，可用于紧急警报、军事或警方戒备等较正式场合，也常见于手机和软件通知等日常场景。语气随语境不同，正式或中性，通常不是俚语或粗俗说法。
Grammar Note
可数名词指具体的警告信号；不可数名词指保持警觉的状态
Pronunciation & Spelling
All the words above rhyme with 'alert' in its American pronunciation /əˈlɝt/, sharing the stressed sound /ɝt/. Beware of lookalikes such as 'alter' /ˈɔːltər/ and 'alt' /ɔːlt/, which start with 'al' but have a different vowel sound.
Usage priority
Collins 词频等级为 3，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.