它需要指令。
需要设置变量是因为(可能在命名模板中)使用了一系列“编程”指令来设置它的值。
You needed to set the variable because you used a sequence of "programming" instructions, possibly in a named template, to set its value.
这个副文件实际上包含绑定器指令,它告诉绑定器需要使用哪个模块调用函数。
This side file is really a file that holds binder instructions telling it the module it needs to call a function.
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