This "write a test, write just enough code to get it to pass, rerun the test" approach is the xp development flow that you should experience every day.
这种“编写一个测试，编写足够的代码来使测试通过，重新进行测试”方法是您每天都在经历的XP开发流程。
2
Next, continue the top-down development approach by beginning to implement the mediation flow component by creating a new implementation.
接下来，继续进行自上而下的开发方式，通过创建一个新的实现来开始实现中介流组件。
3
The reasonable approach is to do the basic flow once, do a loop once, and then do a loop a second time.