也许您正使用瀑布开发方法，或者您已经采用Agile。
Perhaps you are using waterfall development methods, or perhaps you've adopted Agile.
尽管瀑布开发方法的缺点受到了广泛的批评，但是它仍然非常流行。
Notorious weaknesses in the waterfall development method have been widely criticized, yet the method still remains very popular.
使用瀑布开发方法将会产生大量部分完成的工作，因为大量的时间会花在改善需求和设计之上。
Using the waterfall development approach leads to lots of partially done work, because a lot of time is spent upfront in elaborating requirements and in design.
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