Before NBA 2k12, it was only necessary to know the play that was being run to be able to fully shut it down.

在NBA2k12之前，只要知道跑的是什么战术，就完全可以阻断其战术。

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Don't leave your computer on when you've finished working - always shut it down completely and make sure laptop - charging adapters are fully unplugged.

在你工作完成之后记得关闭电脑，而且是完全关闭电脑和拔掉笔记本电脑电池的充电器。

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Because the energy flow is not just non-constant but also erratic, the back-up systems also need to be extremely sensitive and capable of ramping up from shut-down to fully-on within a very short period of time to prevent grid instability and even collapse.

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Leidal also realized that his colleagues did not fully recognize the cost of redundant systems as new systems did not always lead to old ones being shut down, or if they were shutdown may not have much cost saving if they were home grown.

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But why the body starts to shut down in these ways, or how best to treat it when it does, are not fully understood.

BBC: News