宏把使用程序员定义的语言结构编写的代码段翻译成编程语言可以理解的语句。
Macros translate segments of code that have been written in a language structure defined by the programmer into statements that the programming language understands.
编译器必须告诉汇编程序什么时候切换段。这些宏控制应该输出什么命令来告诉汇编程序这些信息。你也可以定义额外的段。
The compiler must tell the assembler when to switch sections. These macros control what commands to output to tell the assembler this. You can also define additional sections.
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