Ah yes, Microsoft. It's widely thought that Microsoft bought up all of Facebook's U.S. banner-ad inventory through 2011.
是的，正是微软，人们广泛认为一直到2011年，微软都将接手Facebook在美国的网页横幅广告生意。
One of the key drivers is the huge disparities in CPMs that publishers realise when they sell directly and when remnant inventory is sold via ad networks.
关键驱动之一是发行商认识到采用按展示付费的广告（CPM）时，在他们直接销售和通过广告网络商销售存货之间存在着巨大的差异。
To switch to an ad-supported model, it would have to partner with a company that already has a huge inventory of interactive ads.
为了转换到一个支持广告的模式，它必须和一家已经有大量互动广告的公司合作。
The first generation of AD networks were built on their ability to aggregate and control inventory from a wide array of websites.
第一代网络广告系统建立在他们从一系列站点聚集来的资源的控制。
AdMob will allocate AD impressions based on the quantity and quality of the inventory that each member contributes.
AdMob也会依据每个会员贡献广告数量和质量做一个广告效果的调整。
AdMob will allocate AD impressions based on the quantity and quality of the inventory that each member contributes.
AdMob也会依据每个会员贡献广告数量和质量做一个广告效果的调整。
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