As more advertising budgets rush to the Internet, available quality AD inventory will continue shrinking.
因为越来越多的广告预算在投入网络，可用的资源将进一步短缺。
Display advertising represents roughly 20% of all online AD revenue.
展开式广告目前在全部在线广告收入中占20%左右。
More effective AD vehicles certainly create more advertising.
更多的有效的广告宣传工具会带来更多的广告收益。
Thee simplest kind of advertising is the classified ad.
最简单的一种广告就是分类广告。
Thee simplest kind of advertising is the classified ad.
最简单的一种广告就是分类广告。
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