Suppose you are fixing a defect or implementing an enhancement, for example.

比如，假设你正修改一个缺陷和执行一个新功能。

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Cost savings: as most of us have heard before, the cost of fixing a defect increases the further it survives in the development cycle.

节约成本：和我们中的大多数人之前听说的一样，一个软件缺陷在开发周期中存在的时间越长修复这个缺陷的成本就越高。

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Testing at the end of the lifecycle is the worst possible time that you could do it because the cost of fixing a defect rises exponentially the longer it takes you to find it.

生命周期末尾的测试是最糟糕的可测试时间，因为确定缺陷的成本随您找到它的时间成指数级上升。

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