alert是什么意思_alert单词用法

双语例句

The bank is alert to the danger.
该银行对这种危险有警觉。
《柯林斯英汉双解大词典》
Her whole bearing was alert.
她整个人保持着戒备状态。
《牛津词典》
We all have to stay alert.
我们都必须保持警觉。
《柯林斯英汉双解大词典》
Two alert scientists spotted the mistake.
两个警觉的科学家发现了这个错误。
《牛津词典》
All the St. Louis hospitals are on red alert.
所有的圣路易斯医院都拉响了紧急警报。
《柯林斯英汉双解大词典》
The security alert brought the airport to a standstill.
安全警戒使机场陷入停顿状态。
《牛津词典》
More than 5 000 troops have been placed on (full) alert.
5 000多名士兵已处于（全面）戒备状态。
《牛津词典》
He wanted to alert people to the activities of the group.
他想警告人们注意这个组织的行动。
《柯林斯英汉双解大词典》
The attack was unsuccessful and served only to alert the enemy.
进攻未奏效，反而使敌人警觉起来。
《牛津词典》
Following the bomb blast, local hospitals have been put on red alert.
炸弹爆炸之后，当地医院一直处于戒备状态。
《牛津词典》
Police are warning the public to be on the alert for suspicious packages.
警方警告公众要警惕可疑包裹。
《牛津词典》
There has been criticism of how his administration handled last week's terrorism alert.
对他的政府对待上周恐怖主义戒备状态的方式有批评之辞。
《柯林斯英汉双解大词典》
There were 15 minutes between the first air raid alert and the sounding of the all-clear signal.
从第一个空袭警报到警报解除号音其间有15分钟。
《柯林斯英汉双解大词典》
Troops in the Philippines have been put on full alert in anticipation of trouble during a planned general strike.
预期在计划的总罢工期间会有麻烦，在菲律宾的军队已处于完全戒备状态。
《柯林斯英汉双解大词典》
They were quiet during the alert.
警戒期间他们保持安静。
The cat is alert to every sound and movement.
那只猫对任何响动都很警觉。
《新英汉大辞典》
When you click the trigger, it pops up an alert.
当你点击这个触发器时，它就会弹出一条警告。
For example, fear can alert us to possible danger.
例如，恐惧可以提醒我们可能存在的危险。
They were up and alert and ready, evidently, whoever they were!
显然，不管他们是谁，他们都抖擞精神，警觉起来，做好了准备！
Just keeping you awake and alert apparently isn't enough of a benefit.
仅仅让您保持清醒和警觉显然不足以带来好处。
This is the sign used to alert drivers that there is a playground nearby.
这个标志是用来提醒司机附近有活动场所。
The key to staying alert and awake on the job is to keep your chi moving.
在工作中，保持警觉和清醒的关键是让你的“气”运动。
SATAN has done more to alert people to the risks than cause new disorder.
“撒旦”更多地提醒人们注意危险，而不是制造新的混乱。
You can be alert, even though the intensity of the stimulus is quite low.
即使刺激的强度很低，你也要保持警惕。
We become more energetic, more alert, better able to take effective action.
我们变得更有活力、更警觉、更有能力采取有效的行动。
When the system thinks it's being jammed, it'll notify you via push alert .
如果系统判断受到干扰，就会推送警报来通知你。
An alert should appear, informing you to first select an item from the grid.
一个警告就会出现，通知您首先从这个表格中选择一个条目。
He remembered afterward how intensely wide awake and alert he had thought he was.
后来他回想起来，还以为自己当时是多么清醒和警觉。
"Sharp" meant genuinely discerning, alert, acute rather than quick-witted or clever.
“Sharp”的意思是真正具有辨识力、警觉、敏锐，而不是机敏或聪明。
Install a CO detector to alert you of the presence of the deadly, odorless, colorless gas.
安装一氧化碳检测器来警告是否存在这种致命的、无色无味的气体。

短语搭配

alert someone to sth

使...警觉；使...警惕
on the alert

提防；警戒著；随时准备著
red alert

紧急警报，红色警报；应急状况

近义词

vt. 警告；使警觉，使意识到

adj. 警惕的，警觉的；留心的

n. 警戒，警惕；警报

反义词

考纲分布

近12年出现 0 次

重要程度

0%
adj 警觉的
0%
vt 向…报警; 使意识到
0%
n 警报

考纲释义

adj. 警觉的
vt. 向…报警; 使意识到
n. 警报

考纲分布

近12年出现 18 次

重要程度

56%
adj/un/v 警戒(的); 使警戒
17%
v/adj (使)意识到
11%
n 警报
11%
n 警戒期
6%
adj/n 机灵的; 灵敏的

考纲释义

adj/un/v. 警戒(的); 使警戒
英文释义：
quick to notice any unusual and potentially dangerous or difficult circumstances; \na situation in which people are watching for danger and ready to deal with it; \nwarn someone about a dangerous or urgent situation
真题例句：
- The research team say they believe the \alert-but-passive\ nature of television watching may be creating stress on the mind which contributes to memory decline.
  该研究小组表示，看电视“警觉但被动”的本质可能会给大脑造成压力，从而导致记忆力下降。
  [2020年 CET4 听力]
v/adj. (使)意识到
英文释义：
make someone aware of something; \naware of something; especially a problem or danger
真题例句：
- We need to be alert to the possible harm of violent games that could be done to children.
  我们需要警惕暴力游戏可能对儿童造成的伤害。
  [2021年 CET4 写作]
n. 警报
英文释义：
a warning of danger or of a problem
真题例句：
- Evacuate the area with the orange alert.
  用橙色警报撤离该地区。
  [2020年 CET4 听力]
- The transport minister advised people in parts of Scotland covered by the orange alert to avoid travel on Wednesday.
  交通部长建议出现橙色警报的苏格兰部分地区的居民周三避免出行。
  [2020年 CET4 听力]
n. 警戒期

英文释义：
the period during which an alert is in effect
adj/n. 机灵的; 灵敏的

英文释义：
able to think clearly; intellectually active

必考短语

orange alert
橙色预警
be alert to
警惕；保持警觉；应留意

真题例句

When the system thinks it's being jammed, it'll notify you via -94- push alert ( ' , 推送警报).
出自-2016年12月阅读原文
That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?Jamming concerns are nothing new, and they're not unique to security systems.
出自-2016年12月阅读原文
It caught us in the act, sent an alert to my smartphone, and also listed our RF interference on the system's event log.
出自-2016年12月阅读原文
If they detect something wrong while the system is armed, they'll transmit a wireless alert signal to a base station that will then raise the alarm.
出自-2016年12月阅读原文
More sleep in old age, however, is associated with better health, and most older people would feel better and more alert if they slept for longer periods, he said.
出自-2011年6月阅读原文
She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators.
2017年12月四级真题（第一套）阅读 Section C
She worked out that, if the left hemisphere was staying alert to keep guard in a strange environment, then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones.
2017年12月四级真题（第一套）阅读 Section C
When the system thinks it's being jammed, it'll notify you via push alert.
2016年12月四级真题（第一套）阅读 Section B
with the right device tuned to the right frequency, what's to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?
2016年12月四级真题（第一套）阅读 Section B

考纲分布

近12年出现 13 次

重要程度

38%
v/adj 提醒注意; 使意识到; 意识到
31%
adj/un/v 警戒的; 警戒状态; 使警戒
23%
cn 警报
8%
adj/n 机灵的; 灵敏的

考纲释义

v/adj. 提醒注意; 使意识到; 意识到
英文释义：
make someone aware of something; \naware of something, especially a problem or danger
真题例句：
- In 2016 the Air Force had to issue 3,995,874 warnings to satellite owners alerting them to a potential nearby threat from another satellite.
  空军在2016年不得不向卫星拥有者发出3,995,874条警告，提醒他们附近另一颗卫星的潜在威胁。
  [2019年 CET6 阅读理解]
- For example, fear can alert us to possible danger.
  例如，恐惧可以提醒我们可能的危险。
  [2016年 CET6 听力]
- Their behaviors—drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school—can alert parents and teachers that serious problems are brewing.
  他们的行为——酗酒、使用非法药物、吸烟和逃学——可以提醒家长和老师，严重的问题正在酝酿之中。
  [2016年 CET6 阅读理解]
- To alert American workers to the urgency for adaptation.
  提醒美国工人适应的紧迫性。
  [2016年 CET6 阅读理解]
adj/un/v. 警戒的; 警戒状态; 使警戒
英文释义：
quick to notice any unusual and potentially dangerous or difficult circumstances; \na situation in which people are watching for danger and ready to deal with it; \nwarn someone about a dangerous or urgent situation
真题例句：
- In 2016 the Air Force had to issue 3,995,874 warnings to satellite owners alerting them to a potential nearby threat.
  2016年，空军不得不向卫星所有者发出3995874次警告，提醒他们附近存在潜在威胁。
  [2019年 CET6 阅读理解]
- Half of your brain stays alert and prepared for danger when you sleep in a new place, a study has revealed.
  一项研究显示，当你在一个新的地方睡觉时，你的一半大脑保持警觉，为危险做好准备。
  [2017年 CET6 阅读理解]
- The researchers explained that the study demonstrated when we are in a novel environment the brain partly remains alert so that humans can defend themselves.
  研究人员解释说，这项研究表明，当我们处于一个新的环境中时，大脑部分保持警惕，以便人类能够保护自己。
  [2017年 CET6 阅读理解]
cn. 警报
英文释义：
a warning of danger or of a problem
真题例句：
- Paris prosecutor Remy Heitz said that an initial fire alert was sounded at 6:20 pm on Monday evening but no fire was found.
  巴黎检察官Remy Heitz表示，周一晚上6点20分发出了最初的火灾警报，但没有发现火灾。
  [2021年 CET6 阅读理解]
- The second alert was sounded at 6:43 pm, and the blaze was discovered on the roof.
  第二次警报于下午6:43响起，在屋顶上发现了大火。
  [2021年 CET6 阅读理解]
adj/n. 机灵的; 灵敏的

英文释义：
able to think clearly; intellectually active

必考派生词

alertnessn. 机敏；警戒

真题例句

To alert American workers to the urgency for adaptation.
出自-2016年6月阅读原文
Their risky behaviors—drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school—can alert parents and teachers that serious problems are brewing.
出自-2016年12月阅读原文
To be alert to fluctuations in foreign markets.
出自-2011年12月阅读原文
And when that is failed, they stop the hunters, banging on pots and pans to alert the deer.
出自-2013年12月听力原文
Half of your brain stays alert and prepared for danger when you sleep in a new place, a study has revealed.
2017年6月六级真题（第三套）阅读 Section A
The researchers explained that the study demonstrated when we are in a novel environment the brain partly remains alert so that humans can defend themselves against any potential danger.
2017年6月六级真题（第三套）阅读 Section A

考纲分布

近18年出现 4 次

重要程度

50%
adj 机警的; 警惕的
25%
v 使警觉; 提醒
25%
n 警报

考纲释义

adj. 机警的; 警惕的
英文释义：
quick to see, understand, and act in a particular situation
真题例句：
- Stay alert to serious symptoms, such as chest pain, severe shortness of breath or dizziness, or faintness, and seek medical attention immediately.
  对严重症状保持警惕，如胸痛、严重气短、头晕或昏厥，并立即就医。
  [2022年英语二阅读理解B]
v. 使警觉; 提醒
英文释义：
make someone aware of something; \naware of something, especially a problem or danger
真题例句：
- Jealousy and anger, for example, may have evolved to alert us to important inequalities.
  例如，嫉妒和愤怒可能是为了提醒我们注意重要的不平等现象而进化的。
  [2019年英语二阅读理解A]
n. 警报

英文释义：
a warning to people to be prepared to deal with something dangerous

必考短语

alert to
警觉

用法讲解

alert常用作表语，后接介词in或to，表示“对...保持警惕”。例：Schools need to be constantly alert to this problem.各学校对此问题应该始终保持警惕。
alert是及物动词，常接名词或代词作宾语；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。例：We will alert operating personnel to repair.我们将通知操作人员去维修。

真题例句

Consumers passionate about a product may create “owned” media by sending e-mail alerts about products and sales to customers registered with its Web site.
出自-2011年考研阅读原文
Jealousy and anger, for example, may have evolved to alert us to important inequalities.
2019年考研真题（英语二）阅读理解 Section Ⅱ
The heightened alert followed an emergency meeting with flu experts in Geneva that assembled after a sharp rise in cases in Australia, and rising numbers in Britain, Japan, Chile and elsewhere.
2010年考研真题（英语二）完形填空 Section Ⅰ