alert双解释义

1. 警觉的，警惕的
2. 留神的
3. 机敏的，机灵的，灵活的，机警的，灵敏的
4. 精神抖擞的
5. 细心的
6. 活跃的

1. 警戒期间，警戒期间，警报发出后，待机出动的时间
2. 警戒，警报，警惕，戒备
3. 警戒状态
4. 【军】紧急待命，战备，待命行动
5. 发警报
6. 报警信号
7. “警戒”（英国制造的巡逻艇）

1. 使警觉， 使警戒，（使）警惕，使戒备，使（某人）保持警觉
2. 使注意，提醒，使...意识到， 使认识到，提醒（某人）注意
3. 通知待命，通知，通报
4. 向…报警，向…发出警报
5. 告诉
6. 发出警告，命令警戒
7. 清醒

1. condition of heightened watchfulness or preparation for action;

   "bombers were put on alert during the crisis"
   

2. a warning serves to make you more alert to danger
3. an automatic signal (usually a sound) warning of danger

1. engaged in or accustomed to close observation;

   "caught by a couple of alert cops"
   "alert enough to spot the opportunity when it came"
   "constantly alert and vigilant, like a sentinel on duty"
   

2. quick and energetic;

   "a brisk walk in the park"
   "a lively gait"
   "a merry chase"
   "traveling at a rattling rate"
   "a snappy pace"
   "a spanking breeze"
   

3. mentally perceptive and responsive;

   "an alert mind"
   "alert to the problems"
   "alive to what is going on"
   "awake to the dangers of her situation"
   "was now awake to the reality of his predicament"
   

1. warn or arouse to a sense of danger or call to a state of preparedness;

   "The empty house alarmed him"
   "We alerted the new neighbors to the high rate of burglaries"
   

1. alert的解释

1. 警告：以及Bently Nevada电涡流传感器),每个通道最多4个变量,具有积分和滤波控制,某些变量具有多达八极点的滤波,24位A/D转换器,25 kHz 带宽,4通道温度输入(E、J、K和 T 型热电偶),2级报警 - 警告(ALERT)和危险(DANGER),

2. 报警：选择的流程(Flow)(5),请注意鼠标指针的更改(6)(使用流程工具时,光标形状有所变化以表示当前位置是否可以作为流程定义的来源或目标). 12、 单击报 警(Alert)模式 trigger (7),以指定目标,这样就出现一个箭头

3. 机警的：见过面对媒体英气逼人的晓明,再感受到晓明在明教中的那种放松,我能够很清楚的感受到晓明在工作中和生活中的两种不同状态. 工作时的他是机警的(alert),职业化的(professional)和专注的(dedicated),但是看起来很严肃,笑容仿佛穿上了无形的盔甲,时时防备着明暗箭.

4. 警报：过去他曾担任采访性杂志<>(Alert)的主编,也出版过不少著作. 他的作品中包括朋克乐手尼克凯夫(Nick Cave)以及德国工业乐团(Einstürzende Neubauten)的自传. 沙弗瑞祖拉沃斯基毕业于波兰罗兹国际电影学校,

1. He has an alert mind.
   他很机灵。
2. The alert listener will have noticed the error.
   耳朵尖的人能听出这个错。

1. He is a man alert in problem.
   他是个留意问题的人。

1. Our guerrillas suddenly became alert as the dogs barked.
   狗叫了,我们的游击队员突然警觉起来。
2. The rabbit seems to be very alert all its life.
   兔子似乎一生都小心翼翼,十分警觉。

1. Be alert for any sign of change in the patient.
   对这个病人的病情变化要密切注意。
2. The student is alert in answering the question.
   这个学生回答问题小心谨慎。
3. A monkey is very alert in its movements.
   猴子的动作很敏捷。
4. He is always alert to danger.
   他对危险时刻保持警惕。
5. She was alert to seizing an opportunity.
   她机敏地抓住一个机遇。

1. So alert she was that not a single error in the report slipped her.
   她十分警觉,所以报告中没有一个错能逃过她的眼睛。

1. The voice of the caller alerted her.
   呼唤者的声音使她警觉起来。
2. Sirens alerted the cities long before the enemy bombers arrived.
   敌军轰炸机凌空以前,各城市早已鸣了警报。
3. They alert the public to the need for pollution control.
   他们提醒公众注意控制污染的必要性。
4. He had phoned the nearby villages, alerting them to the possibility of forest fires.
   他给附近几个村庄打了电话,叫人们注意森林可能起火。
1
5. The guard was alerted by a man climbing towards him.
   有一个人向卫兵爬过来,使卫兵警惕起来。

1. The boss alerted the guard that thief might come out at night.
   老板要警卫提防夜里可能有贼。
2. The villagers alerted the traveller that wolves might come out in the night.
   村民们叫旅行者提防,夜晚有狼群出没。

1. The radio alerted coastal residents to prepare for the hurricane.
   电台警告沿海居民做好预防飓风的准备。
2. We will alert operating personnel to repair.
   我们将通知操作人员去维修。

1. There are hurricane warning systems for alerting island residents.
   现在有了向岛上居民发出飓风警报的警报系统。

1. A national police alert was in effect.
   全国实行戒备。
2. The hurricane alert is over.
   飓风警报解除了。
3. The air-raid alert sounded at noon.
   正午时响起了空袭警报。
4. We'd just boarded the bus when the alert sounded.
   我们刚登上公共汽车，警报就响了。
5. If there is an alert, don't panic, just make your way to the exit.
   如果有警报，不要惊慌，只要走向太平门就行了。
6. The machine sounded the alert.
   机器发出了警报。
7. They received the alert at midnight.
   他们在午夜接到警报。
8. It's the alert signal.
   这是警报信号。
9. They were quiet during the alert.
   警戒期间他们很安静。
10. We should not run about aimlessly during an alert.
    警戒期间不可到处乱跑。
11. The whole country is in a state of alert.
    全国正处于戒备状态。
12. Security forces are on a high state of alert because of the President's visit.
    由于总统来访，保安部门处于高度警戒状态。
13. Sirens brought the whole street to the alert .
    警报声使整条街道进入戒备状态。

on alert

警戒着，防备着 ready to take action to deal with a dangerous situation

on the alert

密切注意着，随时准备着paying attention to what is happening and ready to react quickly if necessary

on alert,on the alert

这两个短语形似义近，其区别是：

on alert是针对危险情况的，意思是“防备着”；on the alert是针对事态发展的，意思是“随时准备着”。