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。
If we are alert enough, we'll notice that we are always on guard.
如果我们足够警惕，你会发现我们经常是在站岗。
Run your page again and notice that you now have to click on an image to get the alert box to pop up.
再次运行页面并注意，现在必须要单击每个图像以弹出警告框。
How it could happen: There are currently more than 23, 000 nuclear weapons in the world, of which 8, 000 are currently operational and 2, 000 are on high alert and ready to launch on short notice.
它是怎样产生的：目前在世界上有超过23000种的核武器，其中有8000种已在使用中，还有2000种正处于高度戒备状态，随时准备发射。
Possible values include: debug, info, notice, warn, error, crit, alert, emerg.
可能存在“调式，信息，通知，警告，错误…”
The herd keeps alert while grazing, ready to flee at a moment's notice.
骆马群吃草的时候非常机警，遇到紧急状况随时逃走。
The herd keeps alert while grazing, ready to flee at a moment's notice.
骆马群吃草的时候非常机警，遇到紧急状况随时逃走。
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