youdao

The AST is a tree representation of the source code that contains everything from variable declarations to function definitions and method invocations.

AST是源代码的树形表示，它包含了从变量声明到功能定义和方法调用的全部内容。

youdao

To see more clearly, this distinction of when you would use a scanner vs. an AST, consider the code in Listing 10.

要更清晰地了解何时使用扫描程序与何时使用 AST 之间的差别，请考虑清单 10 中的代码。

youdao

The AST will receive a small royalty, in the neighborhood of 4-5% of revenue and 90% of those funds collected are distributed to the public school system.

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