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。

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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。

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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。

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The alert was issued after the kidnapping and rescue of a New York Times reporter in Kunduz province.

VOA: standard.2009.09.10

This is more of a spoiler alert, but you've had 41 years to see this movie.

它不只是一个扰流警报，但是你用了41年来看这个电影。

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Because it's a very intense job they have to be alert every moment.

因为是高度集中的工作,他们需要时刻保持警惕。

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In the corporate world, those who witnessed such malfeasance might alert a higher authority.

ECONOMIST: The Catholic church in America

Sliaptsova managed to alert a local journalist by surreptitiously using her mobile phone before it was confiscated.

BBC: Belarus's university in exile

Google used a similar technique last year to successfully alert a million users infected with a different kind of malware.

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