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void CityXMLManager::print_patch_to_xml (
     patch_type _type, 
     vector <patch_type> & _neighbours_types, 
     vector <pair<Vector3, float > > & _obstacles)

嗨，我想问一下上面的行在语法上是否被接受？这行代码以前在 Window 和 Visual Studio 2008 编译中运行良好。然后，当将相同的代码投入到 mac os x 环境中时，就会出现错误。有人把这些代码传给了我，我不明白这一行发生了什么。

抱怨的错误是：

Use of undeclared identifier 'patch_type'
Variable has incomplete type 'void'
'_neighbours_types' was not declared in this scope
'_patch_types' was not declared in this scope
Reference to 'vector' is ambiguous

提前致谢！

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