Figure 6: Estimation in waterfall and iterative process lifecycles.

图6：瀑布和迭代生命周期中的评估。

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In waterfall development, the designers and developers try to achieve the desired behavior as best they can by complying with the specification.

在瀑布开发中，设计人员和开发人员试图达到他们期望的行为，就是代码满足需求规格说明。

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In waterfall processes, it is not possible to directly compare analysis activity metrics with design activity metrics or code activity metrics, because they are entirely different activities.

在瀑布过程中，不太可能直接比较分析活动量度和设计活动量度或编码活动量度，因为它们是完全不同的活动。

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In fact, the water at the bottom of the waterfall is hotter than the water at the top of the waterfall.

实际上，瀑布底部的水,的确比顶部的水要热。

麻省理工公开课 - 热力学与动力学课程节选

The stock and bond markets dropped in waterfall fashion after the Lehman bankruptcy and then stocks fell further on "no confidence" after that first disastrous Geithner press conference.

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Nothing compares to standing under a waterfall in an ancient rainforest with butterflies darting around you.

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Ms. FEIST: (Singing) There's a limit to your love, like a waterfall in slow motion.

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