软件项目很少能够做好计划，作为结果，我们最常见的就是在范围、费用和时间的铁三角中平衡。

Software projects rarely do as well as planned and, as a result, far too often we have to visit our iron triangle of scope, cost, and time.

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当然，你需要设定好时间、费用、可选项等等的范围。

Of course, you set boundaries of time, money, choices, and so forth.

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不过几秒时间，约翰•爱德华兹便纵深到自己医疗保健计划的具体细节之中，随后答复提问，讨论范围由高医疗费用到伊朗的影响。

Then on to questions. The subjects range from high medical costs to the influence of Iran.

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