在一定时空能产生积极作用的政策，在另一时空会产生消极作用。
Within a certain space time, positive effect will take place while negative effect will occur within another time space.
社会资本对企业营销的影响具有双重性，既存在积极作用，也会产生消极影响。
Social capital has duality influence on marketing; that is to say, it has positive function and negative effect.
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