As the sun gets lower in the sky- the light rays must pass through more air- and so the longer orange and red rays also develop scattered.
由于太阳在天空中不断下沉，114广告联盟。光线必须穿越更多的空气，所以，我不知道中国会计视野。对比长一些的橙色和红色也发生散射。Even given the choice of ad networks, the continued flow of dollars online means that prices are rising.
但是，即使有了广告联盟，在线广告的价格仍然在不断上升。He used custom ad networks that included travel-themed sites, and another that would put the ads only on high-end sites.
他还选择了一个涵盖数个旅游站点和一些高端站点的广告联盟。Last May, Microsoft bought aQuantive, which owns some ad networks through a subsidiary, for $6 billion.
去年5月，微软花费60亿美元购买了拥有广告联盟的aQuantive。Except this time, they want him to hit the networks even harder.
另外，客户还希望他能够更多地在广告联盟上投放广告。Increasingly, marketers are looking to ad networks, which sell display advertising across groups of Web sites.
现在，市场营销人员的目光将逐渐转向广告联盟，即多个站点捆绑在一起销售页面广告。The reasons ad networks are thriving are price and improved technology.
广告联盟蓬勃发展的主要原因是不断发展的技术和具有较强优势的价格。Separately, Yahoo agreed to acquire online-advertising alliance 5to1 Holding Corp. for $28 million.
另外，雅虎同意以2800万美元收购在线广告联盟5to1控股公司。He estimated that the top 20 ad networks had earned $2 billion in 2007 , or 14 percent of the display market .
他估计前20位的广告联盟在2007年的盈利总额应该在20亿美元左右，占整个在线广告市场的14%。