你要做研究，试图确定哪种媒体能够以最低的成本接触到最多的潜在客户。

You do research, trying to determine which media will reach the most potential customers for the lowest cost.

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有今天的互联网和社交媒体，可以用很低廉的成本获得消费者试用和反馈数据。

Consumer testing and feedback can be achieved at low cost today with the Internet and social media.

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社会性媒体之所以呈现增长事态部分原因在于其低廉的成本。

Part of the reason for this increased spending is the low cost of social media tools.

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