Since programs are often long-lived (they can last for years or decades), it is customary to break them into stages, or time boxes focused on a specific delivery of business value.

由于计划的生命周期通常较长（它们能够持续几年或者几十年），它会习惯性地将它们分为几个阶段，或者针对一个商业价值的特殊交付的时间段。

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The doorbell rings, giving Michael a much needed break from the project. He opens the door for a delivery girl.

门铃响了，正好给了Michael一个必需的休息间隙，他打开了门，是个送比萨饼的女孩。

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But 50% of them break in between delivery and the final production of an iPhone.

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For now just keep in mind that your delivery can make or break a presentation.

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Sammy brought up the hundred with his third six over long-on but his innings came to an end with the first ball after the drinks break as he chopped a regulation delivery from Bopara on to his stumps.

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