本文阐述了媒介影响力的概念和理论，并指出媒介经济的实质是由媒介影响力大小而带来的经济效益。

The paper discusses concept and theory of medias effectiveness and points out that the essence of media economy lies on economic benefits brought by medias effectiveness.

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Dockers这款广告是由媒介公司OMD 和 Medialets制作的，这两家公司是手机领域里的广告分析机构。

The Dockers ad was created by media agency OMD and Medialets, an analytics and advertising agency that specializes in mobile.

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种子由其他媒介，如风所传播。

The seeds are dispersed by some other agent, like the wind.

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