·2,447,543篇论文数据，部分数据来源于NoteExpress
Free samples are below-the-line advertising.
赠送样品属于线下广告。
www.xdf.cn
Below-the-line advertising has the advantages of being cheap and very easy to produce.
低层次广告宣传品有成本低廉，编写容易的优点。
www.jukuu.com
The advertising campaign will be supported by a pr and below-the-line promotion.
广告宣传活动将采取公关和线下促销的形式。
www.youdict.com
They want direct results which come from promotions or below-the-line advertising.
FORBES: Learning From China's Online Advertisers
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