AccordingtoNielsenth的知识精选

  AccordingtoNielsen,theaveragenumberofmobilephonecalls...
问题详情:  AccordingtoNielsen,theaveragenumberofmobilephonecallswemakeisdroppingeveryyear,afterhittingapeakin2007.Andourcallsaregettingshorter:In2005theyaveragedthreeminutesinlength;nowthey’realmost...
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