求翻译：很难让用户确信这种演化方法的结果是可以控制的。建设周期长，而软件技术发展比较快，所以经常出现软件开发完毕后，和当前的技术水平有了较大的差距，无法满足当前用户需求。是什么意思？

Difficult to get convinced that the results of this method of evolution can be controlled. Long construction period, and the development of software technology is relatively fast, so often appears after the software development, and the current level of technology has made significant gap, unable to

It is difficult to trust that this evolution is the results of the method can be controlled. Long time to build, and software technology development of more quickly, so the software development is complete, and current technology with a large gap to meet the current needs of the user.

Very difficult to let the user believe firmly this evolved method result is may control.The construction cycle is long, but the software technological development quite is quick, after therefore appears the software development to finish frequently, had the big disparity with the current technical l

Difficult for users are confident that this method is the result of evolution control. Construction of long cycle, and software technology development faster, so often software development has been completed, and the current technical level there is a large gap, unable to meet current user needs.

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