例如，我一般先创建两个模型(一个用于用户，另一个用于贴子)，这两个模型使我可以与users、posts和following表交互，然后从这两个模型开始继续前进。
For example, I normally start by creating two models (one for users and the other for posts) that allow me to interact with the users, posts, and following tables, then move on from there.
只要您编写的代码用来产生要求用户与之交互的组件(如对话框)，就要编写测试，但实际上编写测试要在编写代码之前进行。
Write the tests as soon as there is code to be written that produces something a user will interact with (such as a dialog), but before actually writing the code.
实现全语音操作。能通过语音操纵它前进，后退，左转，右转，跳舞，并且能进行交互式的知识问答。
Voice manipulation it can move forward and backward, turn left, turn right, dancing, and can be interactive quiz.
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