Half of your brain stays alert and prepared for danger when you sleep in a new place, a study has revealed.
一项研究表明，当你在一个陌生的地方睡觉时，你的半边大脑会保持警觉并做好准备防范危险。
Birds that are literally half asleep—with one brain hemisphere alert and the other sleeping—control which side of the brain remains awake, according to a new study of sleeping ducks.
根据一项关于睡觉的鸭子的新研究来看，半睡半醒的鸟儿——大脑的一个半球处于警觉状态，另一个半球处于睡眠状态——控制着大脑的哪一边保持清醒。
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。
A signal is an event, and it's used to alert a process.
信号是一个事件，它被用来向某个进程发出警报。
Radiological emergency plans call for a prompt Alert and Notification system.
辐射应急计划需要一个实时警报和通报系统。
Key installations in Kabul and around the country remain on high alert as a result of the assault on the hotel.
对酒店的攻击事件使喀布尔和全国各地的主要设施保持高度警戒。
And in Europe, BMW and Mercedes-Benz recently introduced navigation hardware that can not only plot out a route, but alert a driver to traffic jams.［419 words］
欧洲的宝马和奔驰汽车公司最近引进了一种导航硬件，它不仅能够规划路线而且可以提醒驾驶者注意交通堵塞。
Madan is developing a smartphone app that will alert a named contact, perhaps a relative or doctor, when a person's communication and movement patterns suggest that they are ill.
马丹正在开发一款灵通电话应用程序，当某人的通信与活动模式表明其已生病时，这款软件可以提醒指定的联系人（机主的亲属或医生）。
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。
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。
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。
The security alert brought the airport to a standstill.
安全警戒使机场陷入停顿状态。
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。
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。
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.
研究人员解释说，这项研究表明当我们处于新环境，大脑会保持部分警觉，这样人类就能在各种潜在的危险中保护自己。
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？
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。
It's a very intense job, and they have to be alert every moment.
这是高度集中的工作，他们需要时刻保持警惕。
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。
Remember that hearing a siren or tone alert radio does not mean you should evacuate.
记住，听到警报或人声广播并不意味着你需要撤离。
Our school held a lecture about AIDS last week to alert us the dangers of HIV.
上周我们学校举办了一场关于艾滋病的讲座，让我们意识到艾滋病毒的危害。
As a new YouGov poll shows, Britons are surprisingly alert to class—both their own and that of others.
舆观调查网（YouGov）的一项最新民意调查显示，英国人对阶级的敏感程度令人惊讶——无论是对自己的还是别人的。
Figure 6 shows an example of a dynamic alert definition.
图6显示了一个动态警报定义的示例。
Each type of alert has a different XML document associated with it.
每种类型的警报都有一个与之关联的不同XML文档。
The following figure shows an example of a security alert.
接下来的图片显示了安全警报的示例。
They are on edge, very alert; even a tractor driving by will scare them.
“他们处于紧张之中，非常警觉；甚至一辆拖拉机驶过都会令他们惊恐不已”。
Reclining but alert, a gray Wolf lies in new-fallen snow in the International Wolf Center's live enclosure.
卧著休息却始终保持警惕，“国际狼中心”生态区的一只大灰狼卧在刚下过雪的地上。
Now the system simply issues an alert if a patient's records show an allergy to a drug about to be prescribed.
现在如果处方中有导致病人过敏的药物，系统就会简单的给出一个警告。
A warning alert indicates a non-critical condition that might indicate a non-optimal system, while an alarm alert is a critical condition requiring immediate action.
提醒警报指明了一个非临界条件，这类警报可能意味着当前系统不是最优化的，而报警警报指明的是临界条件，要求立即采取行动。
A warning alert indicates a non-critical condition that might indicate a non-optimal system, while an alarm alert is a critical condition requiring immediate action.
提醒警报指明了一个非临界条件，这类警报可能意味着当前系统不是最优化的，而报警警报指明的是临界条件，要求立即采取行动。
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