A mobile website needs good mobile SEO and SEM (Search Engine Marketing) such as Google mobile AdWords in order to reach potential customers looking for accommodations in your location.
手机网站需要好的手机搜索引擎优化和搜索引擎营销，比如Google Mobile AdWords，来触及在你的地区寻找推荐信息的潜在客户。
SEM (search engine marketing) is a website to promote one of the means.
SEM(搜索引擎营销)是网站推广的其中一种手段。
SEM have done is a comprehensive and effective use of search engine to carry on the network marketing and promotion.
SEM所做的就是全面而有效的利用搜索引擎来进行网络营销和推广。
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