1·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》
2·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。
3·We edited Figure 11 below, so you could see all the questions that are related to a spilled sort alert.
我们对下面的图11进行了编辑，这样您就可以看到与排序溢出警报有关的所有问题。
4·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.
如果他们在系统布防时发现了什么问题，就会向基站发送无线警报信号，然后基站会发出警报。
5·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?
通过将正确的设备调整到正确的频率，如何防止小偷干扰你的设备阻止警报信号到达基站呢？
1·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》
2·You have to be very alert when you are at your most vulnerable, especially when you are depressed or feeling isolated.
在你最容易受到伤害的时候，你必须非常警惕，尤其是当你感到孤独的时候。
3·We must be alert to these signals and respond with the compassion and care that are hallmark traits of what it means to be a woman, anywhere, everywhere.
我们必须警惕这些信号，以同情和关爱来回应，这些信号是标志性特征，说明在任何地方、在所有地方做女人意味着什么。
4·Stay alert to serious symptoms, such as chest pain or pressure, severe shortness of breath or dizziness, or faintness, and seek medical attention immediately.
要对胸痛、胸闷、严重呼吸急促、头晕、晕厥等严重的症状保持警惕，并立即就医。
5·The armed forces were on high alert to guard against any retaliation.
武装部队保持高度警惕，以防发生任何报复行为。
—— 《柯林斯英汉双解大词典》
1·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》
2·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》
3·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》
4·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》
5·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！
1·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。
2·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。
3·When that is failed, they stop the hunters, banging on pots and pans to alert the deer.
当这一切都失败后，他们就会阻止猎人，敲打锅碗瓢盆来警告鹿。
4·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。
5·An alert should appear informing you to first select an item from the grid.
就会出现一个警告通知您首先从这个表格中选择一个条目。
1·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。
2·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。
3·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.
他们酗酒、吸毒、吸烟和逃学的危险行为可以提醒家长和老师，严重的问题正在发酵。
4·Then when an alert is triggered, you can examine what was triggered and why.
然后当触发一个提醒时，您可以检查触发的是哪类警告和触发原因。
5·Icons throughout the book alert the reader to these valuable resources.
整个书中的图标提醒读者注意这些有价值的资源。
1·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》
2·They were quiet during the alert.
警戒期间他们保持安静。
3·Swine flu has become the world's first official pandemic in 41 years after the world Health Organisation raised the alert level on the H1N1 virus from phase 5 to 6, the highest on the scale.
世界卫生组织宣布将甲型H1N 1流感病毒的警戒级别由5级提升至最高级别6级，至此，猪流感已成为41年来世界上第一个正式的全球大流行病。
4·Similarly, high-level events can be decomposed into one or more low-level events or actions; for example, changing a pressure control valve, sounding an alarm, or signaling an alert.
类似地，高层次事件能够被拆分成一个或者多个低层次事件或动作；例如，更换压力控制阀、拉响警报或发出警戒信号。
5·The WHO's alert level for the virus remains at phase five of six, meaning a global outbreak is imminent.
猪流感病毒在世卫组织的六个警戒级别的仍然在第五级，这意味着马上就要全球爆发。
1·An hour and a half after waking, early birds and night owls were equally alert and showed no difference in attention-related brain activity.
在醒后一个半小时，早鸟和夜猫子表现的同样机警，与注意力相关的大脑区域的活动也差不多。
2·A praying mantis on high alert waits for insects drawn through the night to collect Ochroma blossom pollen.
一只螳螂正伏在高处，机警的等待着那些在夜空里飞来飞去以收集巴尔沙树花粉的昆虫。
3·As he rolled over on his elbow he was startled by a loud snort, and saw a bull caribou regarding him with alert curiosity.
当他撑住胳膊肘翻身的时候，一种很大的呼噜声把他吓了一跳，他看见了一只公鹿，它正在用机警好奇的眼光瞧着他。
4·Monkeys of this species have mild character, petite body; are restless in personality and alert and have a maximum body length only 20 centimeters.
这种品种的猴子性格温和、体型娇小，个性好动而机警，体长最长只有20厘米左右。
5·Notice how these small changes make you feel more alert and present.
仔细体会这些细小的改变，它们令你变得机警、感到活在当下。
1·At the same time, workers were required to discard old habits, for industrialism demanded a worker who was alert, dependable, and self-disciplined.
与此同时，工厂还要求工人们摒弃原来的习惯，因为工业制度需要机敏、可靠和自律的工人。
2·But believe me, it will taste so much better than fast food, and healthy eating will make you more alert.
但是，相信我，品尝起来绝对会比快餐味道好，健康饮食会使你变得更加机敏。
3·About 5 years ago I switched to eating primarily whole organic foods and my children seem to be more alert, happy, sleep better and also seem to do better in school.
大约五年前，我开吃转吃纯有机食品，我的孩子们因此而看起来更机敏、快乐、睡得更香，而且学业更进步。
4·Present somber news with a more serious expression. To communicate interest in your listeners, keep your expression alert and friendly.
你的面部表情应当自然地与信息相配合地作出相应改变，说到严肃的问题时要有更严肃的表情，与听众谈判兴趣时则要保持机敏、友好的表情。
5·In order to be alert, you must use the right amount of control and encouragement for each of your employees.
为了保持机敏，你需要给与每一位下属适合的管控与鼓励。
1·Mia is cognitively alert but unable to communicate and I was afraid that as she grew she was not going to be able to tell us what she wanted.
米亚在认知上非常灵敏，但却不能交流。我担心她长大后不能向我们表达自己。
2·My horse was not above medium size, but he was alert.
我所骑的马，大小不过中等，但是感觉灵敏。
3·But now, a new generation of drugs promises to help you to be more alert, popular and intelligent.
但是现在，新一代的药物承诺帮助你变得更灵敏、更受欢迎、更聪明。
4·Feel the rush: Get a sense of thrill and adventure for committing the crime. Use the excitement to heighten your senses and to be alert.
紧迫感：对于这次犯罪要有冒险和兴奋意识，利用这种兴奋的情绪能加强你的感觉而更加灵敏。
5·The young girl initially seems oblivious to Roger's presence yet her sideways stare and alert ears suggests an intuition or acknowledgement of her quixotic dreams.
少女看似忽略了罗杰的存在，但她的锐利的目光和灵敏的听觉，却透露了少女承认了自己也有唐吉诃德式的梦想。