求翻译：改革开放三十年来，中国本土的连锁超市所面临的外部环境发生了许多变化，如何在多变的环境中求得长期生存和发展，已经成为连锁型企业必须面对的重大课题。是什么意思？

Three decades of reform and opening up, China's domestic supermarket chain faces the external environment has undergone many changes, how the changing environment to seek long-term survival and development, has become a chain-based enterprises have to face a major issue.

正在翻译，请等待...

正在翻译，请等待...

Reform and opening up 30 years ago, a local chain of supermarkets in the external environment has undergone many changes, how to seek long-term survival and development in a changing environment, has become the major topic of chain enterprises must face.

Reform and opening up 30 years ago, a local chain of supermarkets in the external environment has undergone many changes, how to seek long-term survival and development in a changing environment, has become the major topic of chain enterprises must face.