This means the declaration context for importation must be a source file, and cannot be a namespace, class, structure, module, interface, procedure, or block.

这意味着导入的声明上下文必须是源文件，而不能是命名空间、类、结构、模块、接口、过程或块。

youdao

This means the declaration context for importation must be a source file, and cannot be a namespace, class, structure, module, interface, procedure, or block.

这意味着导入的声明上下文必须是源文件，而不能是命名空间、类、结构、模块、接口、过程或块。

youdao