By definition, states had at least three social levels.
根据定义，各州至少有三个社会阶层。
Social mobility integrates all the social levels into a whole unit.
社会流动使英国各阶层连结成一个整体。
These social networks involve a complex set of user access levels.
这些社交网络具备复杂的用户访问权限等级。
Two levels: in the future a better level of progress in social space;
两大层次：将来美好进步社会时空层次；
Two levels: in the future a better level of progress in social space;
两大层次：将来美好进步社会时空层次；
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