缺少确定的范围，项目组将承担无法交付的风险，因为经常要向正在构建的项目中添加“再多一条功能”。
Without a defined scope, your project team is in danger of never delivering because you constantly have "just one more feature" added to what you're building.
基准的执行与交付无法及时完成。
The execution of the benchmark as it is delivered will not complete in a timely manner.
否则，当交付时出现问题的时候，他们就无法验证或者复制那些他们交付给客户的结果。
Otherwise when problems are encountered post-delivery, they are unable to validate or replicate what was delivered to the customer.
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