广告宣传活动是虚假的，但它起到了作用。
当然，微软几百万美元的广告宣传在这里也起到不少作用，但是Bing提供的搜索结果的总体质量也非常令人难忘。
Of course, Microsoft's multi-million dollar advertising campaign is surely helping here as well, but the general quality of the search results on Bing is quite impressive.
旅游企业间竞争的急剧加大，使得旅游广告的作用不仅是单纯地向消费者推销旅游产品，还必须与竞争对手的广告宣传进行竞争。
In the circumstance of great competition among tourism enterprises, the tourism ads not only focus on the promotion of the tourism products but also have to compete with those ads from their rivals.
解释说明的作用，广告宣传的作用、传播知识的作用。
Explanation of the role, the role of advertising, the role of spreading knowledge.
这次广告宣传对这种新型汽车的成功起了作用。
The advertising campaign has contributed to the success of the new car.
这次广告宣传对这种新型汽车的成功起了作用。
The advertising campaign has contributed to the success of the new car.
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