You can use it on production systems to turn on or off stored procedure logging on the fly, and it will help you understand and manage your stored procedures.

可以在产品系统中使用这个框架，在系统运行时激活或关闭存储过程的日志功能，它可以帮助我们理解和管理存储过程。

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For example, for one application, you can turn on capture for a few runtime groups and keep it off on others, based on your needs.

例如，对于一个应用程序，根据需要可以启用一些运行时组的捕获，而关闭另一些运行时组的捕获。

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Alternatively, it suggests life from Earth may have landed on other planets or moons on boulders blasted off Earth in an impact, though whether it could survive on those bodies is another matter.

另外，这还表明地球上的生命可能会经由撞击产生的碎屑降落到其他行星或者卫星，当然它们能否在这些天体上生存就是另一回事了。

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Bob Doughty and Faith Lapidus tell about some of the winning American athletes on and off the ice and snow.

VOA: special.2010.02.26

We can actually see spatially all the details in the field animated as you turn the current on and off.

我们能看到,所有细节的空间动画分布,就在你打开电流和切断的时候。

麻省理工公开课 - 媒体、教育、市场课程节选

It all sort of depends on how you hit it off with somebody, whether there's a spark.

这要看你是不是跟那个人合得来，能不能擦出火花。

跟校友们的关系 - SpeakingMax英语口语达人

"I have been working on this off and on for close on 50 years, " he told BBC News.

BBC: Liquid air 'offers energy storage hope'

According to Screen Digest, online viewing is most likely to take off on services based on their devices.

ECONOMIST: Hollywood and the internet

We'll hold off on issuing a verdict on that hereditary flaw until final review units are in our hands -- but consider yourself warned.

ENGADGET: Motorola Droid RAZR Maxx HD hands-on: bigger battery, beautiful display, Jelly Bean onboard