Vulnerable group; Information supporting; Information guarantee mechanism; Knowledge Gap Theory.
弱势群体；信息援助； 信息保障机制；知识沟理论。
Floating population is a special vulnerable group whose legal rights are difficult to guarantee.
流动人口是易于受伤害，合法权益难以保障的特殊人口群体。
VI Design Group has that expertise to guarantee worry free development and deployment.
VI设计小组的专门知识，以保证无忧的开发和部署。
VI Design Group has that expertise to guarantee worry free development and deployment.
VI设计小组的专门知识，以保证无忧的开发和部署。
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