As five-stars is the highest rating in most hotel systems, there is no worldwide standard for a "seven-star hotel", neither is it an official classification of quality.

事实上，现在世界上并没有所谓的七星级酒店标准，这也不是任何官方质量的评定，大部分酒店系统的最高打分只到五星。

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Required on official shipping documents for tax assessment purposes, a tariff code ensures uniformity of product classification world wide.

关税号码可确保全球产品分类的统一，为了进行估税，在正式托运凭证上必须填写关税号码。

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