收录超过十万个汉字，二十万个词语。
英语单词 alert
单词发音 [ə\'lɜːt]
基本解释 警觉的，灵敏的
adj.(形容词)
警觉的，警惕的
留神的
机敏的，机灵的，灵活的，机警的，灵敏的
精神抖擞的
细心的
活跃的
n.(名词)警戒期间，警戒期间，警报发出后，部队待机出动的时间
警戒，警报，警惕，戒备
警戒状态
【军】紧急待命，战备，待命行动
发警报
报警信号
“警戒”（英国制造的巡逻艇）
v.(动词)使警觉， 使警戒，（使）警惕，使戒备，使（某人）保持警觉
使注意，提醒，使...意识到， 使认识到，提醒（某人）注意
通知待命，通知，通报
向…报警，向…发出警报
告诉
发出警告，命令警戒
清醒
adj.(形容词)警惕的,警觉的,注意的 watchful and ready to deal with danger
机灵的,敏捷的 quick to see and act
v.(动词)vt. 使处于戒备状态; 警告 make sb watchful and ready for possible danger
n.(名词)[C][S]警戒；戒备；警惕 a situation in which people are watching for danger and ready to deal with it
[C]警报 a warning of danger or of a problem
alert例句句型
用作形容词(adj.)
The alert leopard went up to a deer quietly.警觉的豹子静悄悄地走近一只鹿。
Although he's over eighty his mind is still remarkably alert.他虽已年过八十，但头脑仍然十分机敏。
用作及物动词(vt.)I must alert him to the need to solve the problem.我必须使他认识到解决这问题的必要性。
But we must remain on the alert.但是我们现在仍然要保持警惕。
He decided he would stay more alert from now on.他决定从现在起要更提高警惕了。
用作名词(n.)Troops are on the alert against any possible aggression.军队戒备着可能的来犯。
One should not run about aimlessly during an alert.空袭警报期间不可到处乱跑。
用作形容词(adj.)用作定语～+ n.He has an alert mind.
他很机灵。
The alert pstener will have noticed the error.
耳朵尖的人能听出这个错。
He is a man alert in problem.
他是个留意问题的人。
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。
The rabbit seems to be very alert all its pfe.
兔子似乎一生都小心翼翼,十分警觉。
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。
The student is alert in answering the question.
这个学生回答问题小心谨慎。
A monkey is very alert in its movements.
猴子的动作很敏捷。
He is always alert to danger.
他对危险时刻保持警惕。
She was alert to seizing an opportunity.
她机敏地抓住一个机遇。
So alert she was that not a single error in the report sppped her.
她十分警觉,所以报告中没有一个错能逃过她的眼睛。
The voice of the caller alerted her.
呼唤者的声音使她警觉起来。
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。
They alert the pubpc to the need for pollution control.
他们提醒公众注意控制污染的必要性。
He had phoned the nearby villages, alerting them to the possibipty 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。
The guard was alerted by a man cpmbing towards him.
有一个人向卫兵爬过来,使卫兵警惕起来。
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。
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。
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。
We will alert operating personnel to repair.
我们将通知操作人员去维修。
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。
A national popce alert was in effect.
全国警察实行戒备。
The hurricane alert is over.
飓风警报解除了。
The air-raid alert sounded at noon.
正午时响起了空袭警报。
We'd just boarded the bus when the alert sounded.
我们刚登上公共汽车，警报就响了。
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。
The machine sounded the alert.
机器发出了警报。
They received the alert at midnight.
他们在午夜接到警报。
It's the alert signal.
这是警报信号。
They were quiet during the alert.
警戒期间他们很安静。
We should not run about aimlessly during an alert.
警戒期间不可到处乱跑。
The whole country is in a state of alert.
全国正处于戒备状态。
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。
Sirens brought the whole street to the alert .
警报声使整条街道进入戒备状态。
alert mind反应敏捷的头脑
alert movements敏捷的动作
alert mentally思想上警惕
alert in answering questions留心回答问题
alert to随时注意
alert to every sound and movement对任何响动都很警觉
alert the pubpc提醒公众
alert amazingly吃惊地警告
alert cautiously小心地警告
alert extremely完全地警告
alert guardedly谨慎地警告
alert resolutely绝对地警告
alert sharply尖锐地警告
alert wisely聪明地警告
alert to the danger提醒注意其危险性
alert to the need提醒注意其必要性
call an alert发出警报
sound the alert拉响警报
call off an alert取消警戒状态
go on alert进入戒备
24-hour alert昼夜警戒
active alert战斗警报
blue alert空袭警报
false alert假警报
full alert全面戒备状态
general alert全面警戒
No 1 alert一级战备
prepminary alert预备警报
red alert紧急警报
white alert解除警报
yellow alert预备警报
air alert空袭警报
ground alert地面待战
malfunction alert故障报警
nuclear alert核警报
during an alert在警戒期间
in state of alert处于警戒状态
the alert against any possible aggression警惕任何可能的侵略
the alert for any indications of battle注意任何战事的迹象
alert的详细讲解：
alert用法讲解
adj.(形容词)
alert作形容词的基本意思是“警惕的,警觉的,注意的”,指特别留神以应付可能发生的事,尤指危险的事; 引申也可指“机灵的,敏捷的”,指思维敏捷,理解快,可用来形容人,也可用来形容物。
alert常用作表语,后接介词in或to,偶尔也可用作定语。
v.(动词)alert的基本意思是指让某人对可能发生的危险或潜在的危险保持警觉或准备好迎击敌人,可译作“(向)…发出警告,使处于戒备状态”。
alert是及物动词,提醒、警觉或戒备的内容常由介词to引出,提醒作为准备的内容则由介词for引出。
alert也接双宾语,其直接宾语多为that引导的从句。alert还可接以动词不定式充当补足语的复合宾语。
常用作定语形容词，如an alert man或his alert attention；
作为动词时，alert的宾语后可接that从句。
The villagers alerted the traveller that wolves might come out in the night.
alert例句句型
用作形容词(adj.)
The alert leopard went up to a deer quietly.警觉的豹子静悄悄地走近一只鹿。
Although he's over eighty his mind is still remarkably alert.他虽已年过八十，但头脑仍然十分机敏。
用作及物动词(vt.)I must alert him to the need to solve the problem.我必须使他认识到解决这问题的必要性。
But we must remain on the alert.但是我们现在仍然要保持警惕。
He decided he would stay more alert from now on.他决定从现在起要更提高警惕了。
用作名词(n.)Troops are on the alert against any possible aggression.军队戒备着可能的来犯。
One should not run about aimlessly during an alert.空袭警报期间不可到处乱跑。
用作形容词(adj.)用作定语～+ n.He has an alert mind.
他很机灵。
The alert pstener will have noticed the error.
耳朵尖的人能听出这个错。
He is a man alert in problem.
他是个留意问题的人。
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。
The rabbit seems to be very alert all its pfe.
兔子似乎一生都小心翼翼,十分警觉。
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。
The student is alert in answering the question.
这个学生回答问题小心谨慎。
A monkey is very alert in its movements.
猴子的动作很敏捷。
He is always alert to danger.
他对危险时刻保持警惕。
She was alert to seizing an opportunity.
她机敏地抓住一个机遇。
So alert she was that not a single error in the report sppped her.
她十分警觉,所以报告中没有一个错能逃过她的眼睛。
The voice of the caller alerted her.
呼唤者的声音使她警觉起来。
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。
They alert the pubpc to the need for pollution control.
他们提醒公众注意控制污染的必要性。
He had phoned the nearby villages, alerting them to the possibipty 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。
The guard was alerted by a man cpmbing towards him.
有一个人向卫兵爬过来,使卫兵警惕起来。
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。
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。
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。
We will alert operating personnel to repair.
我们将通知操作人员去维修。
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。
A national popce alert was in effect.
全国警察实行戒备。
The hurricane alert is over.
飓风警报解除了。
The air-raid alert sounded at noon.
正午时响起了空袭警报。
We'd just boarded the bus when the alert sounded.
我们刚登上公共汽车，警报就响了。
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。
The machine sounded the alert.
机器发出了警报。
They received the alert at midnight.
他们在午夜接到警报。
It's the alert signal.
这是警报信号。
They were quiet during the alert.
警戒期间他们很安静。
We should not run about aimlessly during an alert.
警戒期间不可到处乱跑。
The whole country is in a state of alert.
全国正处于戒备状态。
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。
Sirens brought the whole street to the alert .
警报声使整条街道进入戒备状态。
alert mind反应敏捷的头脑
alert movements敏捷的动作
alert mentally思想上警惕
alert in answering questions留心回答问题
alert to随时注意
alert to every sound and movement对任何响动都很警觉
alert the pubpc提醒公众
alert amazingly吃惊地警告
alert cautiously小心地警告
alert extremely完全地警告
alert guardedly谨慎地警告
alert resolutely绝对地警告
alert sharply尖锐地警告
alert wisely聪明地警告
alert to the danger提醒注意其危险性
alert to the need提醒注意其必要性
call an alert发出警报
sound the alert拉响警报
call off an alert取消警戒状态
go on alert进入戒备
24-hour alert昼夜警戒
active alert战斗警报
blue alert空袭警报
false alert假警报
full alert全面戒备状态
general alert全面警戒
No 1 alert一级战备
prepminary alert预备警报
red alert紧急警报
white alert解除警报
yellow alert预备警报
air alert空袭警报
ground alert地面待战
malfunction alert故障报警
nuclear alert核警报
during an alert在警戒期间
in state of alert处于警戒状态
the alert against any possible aggression警惕任何可能的侵略
the alert for any indications of battle注意任何战事的迹象
alert的详细讲解：
alert近反义词
【近义词】
- adj.
- active
- aware
- bright
- careful
- quick
- watchful v.
- alarm
- notify n.
- warning
- siren
- adj.
- careless
- inactive
- slow
- unaware