I have found it advantageous to break the import process in two steps: syntax conversion and reorganization of data structure.

我发现将导入过程分成以下两个步骤是有利的：语法转换和数据结构的重新组织。

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For a type conversion operator, either the operand or the return type must be of the data type of the class or structure.

对于类型转换运算符，操作数或返回类型必须是类或结构的数据类型。

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The paper analyzes the final targets, whole structure and key technologies of system in detail, and gives design of the data conversion component and message component.

详细分析了系统的设计目标、总体结构和实现的关键技术，并给出了数据转换构件和消息构件的设计。

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