信息的主要来源是大众传媒渠道，如报纸，电视和越来越普及的互联网。

The primary sources of information are mass media channels such as newspapers, TV and increasingly the Internet.

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因此，你也许决定求助于某个可靠的、传统的传媒渠道，阅读由编辑们精选出来的新闻故事。

So you may decide to go to a trusted, traditional media outlet to read the stories selected by its editors.

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广告成本、市场细分以及能使消费者避开广告的新的传媒渠道的出现，都对旧的市场营销方式提出了挑战。

Costs, market fragmentation, and new media channels that let customers bypass advertisements seem to be in league against the old ways of marketing.

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