如果你对rdl的语法还不熟悉的话不要担心，在例子的下一步中我们将会加以详细解释。
Don't worry if you're not familiar with the syntax of RDL yet, we will explain it in detail in the next step of the example.
正如上面所提到的，嵌套的语法通常被错误地认为有子类化的关系——尤其是对那些还不熟悉扩展的用户来说。
As mentioned above, the nested syntax is often mistaken for subclassing by users who are not already familiar with extensions.
正如上面所提到的，嵌套的语法通常被错误地认为有子类化的关系——尤其是对那些还不熟悉扩展的用户来说。
As mentioned above, the nested syntax is often mistaken for subclassing by users who are not already familiar with extensions.
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