例如，目录销售和交叉销售、促销及广告几乎是每个品牌特有的。
For example, catalog upsells and cross-sells, promotions, and advertising are most likely unique to each brand.
当促销同时运用这四个主要元素时，有一定交叉，这在电影促销中很常见。
A certain amount of crossover occurs when promotion USES the four principal elements together, which is common in film promotion.
当促销同时运用这四个主要元素时，有一定交叉，这在电影促销中很常见。
A certain amount of crossover occurs when promotion USES the four principal elements together, which is common in film promotion.
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