The internal dynamic factors include "lower transaction costs", "risk aversion" and "the creation and use of social capital" ;

其中，内部动力因素包括“降低交易费用”、“风险规避”和“创造和利用社会资本”；

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The internal dynamic factors include "lower transaction costs", "risk aversion" and "the creation and use of social capital" ;

其中，内部动力因素包括“降低交易费用”、“风险规避”和“创造和利用社会资本”；

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