To identify and further grasp what is meant by sustainability problems, central sources in the global sustainable development discourse are identified, which guide us to what is meant practically and operationally by sustainability in action.
为确定并理解持续性问题的含义，全球可持续性发展历程中的中心来源被确认出来，这样做能指引我们明白实际中可持续性从实践和经营角度来说的含义。