调研公司电子营销家（eMarketer Inc.）的资料显示，这样的优势使Facebook成为美国图片广告的引领者，并占有16%在线广告的市场份额。

That advantage has helped Facebook become the leader in U.S. display advertising with a 16% share of the online ad market, according to the research firm eMarketer Inc.

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这种“市场调研”式的免费发放电子书为我推销了印刷本。

This "market research" of giving away ebooks sells printed books.

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电子艺界公司出产的电子游戏销售也出现下滑趋势，据市场调研公司NPD统计，电子艺界已经在全美盈利4.27亿美元。

A downward trend in sales is also evident for the computer games made by Electronic Arts, which have sold a total of $427m in America, according to NPD, a market-research company.

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