Thirdly, the necessity and possibility of the cooperation among harbors around the Bohai Bay are expounded through descriptive and qualitative method both in theory and practice.
然后，通过定量和定性的方法，从理论和现实两个方面阐述了环渤海湾港口群合作的必要性和可能性。
Thirdly, the necessity and possibility of the cooperation among harbors around the Bohai Bay are expounded through descriptive and qualitative method both in theory and practice.
然后，通过定量和定性的方法，从理论和现实两个方面阐述了环渤海湾港口群合作的必要性和可能性。
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