Advertising on the Web is very effective in the sense that advertisers can reach great scale and do precision targeting.
网络广告之所以非常有效，某种意义上在于它传播广并且能精确定位。
Advertising on the Web is very effective in the sense that advertisers can reach great scale and do precision targeting.
网络广告之所以非常有效，某种意义上在于它传播广并且能精确定位。
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