a universal social structure
the Variety of Social Structure
Hierarchy Structure
多层次结构
分层结构
体系结构
层次化结构
树层次结构
层次结构
分级结构
hierarchy structure analysis
recursive hierarchy structure
banded structure structure
newly-built structure and existing structure
Structure and electronic structure
the frame structure and masonry structure
(the)medical cost social pool for major diseases
a family’s social standing
a harmonious social environment
a sense of social group
a virtuous circle of social security
ability of social adaptation