求翻译：坚持对外开放基本国策，坚定不移地发展开放型经济，奉行互利共赢的开放战略是改革开放30多年来中国经济持续快速发展的一条成功经验。是什么意思？

Adhere to the basic national policy of opening up, unswervingly develop an open economy, pursue win-win strategy of opening up the reform and opening up 30 years of sustained and rapid development of China's economy a successful experience.

Adhering to basic national policy of opening up, and unswervingly develop the open economy, pursue mutually beneficial win-win strategy of opening up the reform and opening up 30 years of China's sustained and rapid economic development a successful experience.

Persisted the opening to the outside world basic national policy, develops the open-type economy steadfastly, carries out the open strategy which the mutual benefit altogether wins is a success experience which the reform and open policy 30 for many years China economy has continued to develop fast.

Adhere to the basic national policy of opening up, and unswervingly develop an open economy, pursue mutually beneficial win-win strategy of opening up the reform and opening up more than 30 years of sustained and rapid economic development in China of a successful experience.

Adhere to the basic national policy of opening up, unswervingly develop an open economy, pursue win-win strategy of opening up the reform and opening up 30 years of sustained and rapid development of China's economy a successful experience.