Each module has its own private symbol table, which is used as the global symbol table by all functions defined in the module.

对应于定义模块中所有函数的全局语义表，每一个模块有自己的私有语义表。

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In fact function definitions are also 'statements' that are' executed '; the execution enters the function name in the module's global symbol table.

事实上函数定义既是“声明”又是“可执行体”；执行体由函数在模块全局语义表中的命名导入。

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