first error - you need to explicitly use the namespace:

std::vector<Router> Routers;

不要使用namespace std;在头文件中

Don't "use namespace std;" in header files

其他错误从第一个开始重新生成：）

Other errors are restulting from the first :)

以后，你需要做向前宣布的Router类，put

As to the referencing to the class defined later, you need to do forward declaration of Router class, put

class Router;

加入您的Network.h

into your Network.h