As a first step toward iterative development, consider one or more functional prototypes during the requirements and design phases.
作为向迭代开发转换的第一步，在需求和设计阶段考虑一个或者更多的功能原型。
2
One major step foreword in design savvy was getting away from the pixel fonts of yester year and saying I’m ok with a size 28 font.
设 计之前一个主要的步骤是想到不要用那些很久之前用的像素字了，然后说我觉的28号字很好。
3
In each iteration, you do some requirements, design, implementation, and testing of your application, thus producing a deliverable that is onestep closer to the final solution.