What if all these letters are just different international phone numbers?

如果这些字母只是不同的国际电话号码呢？

Studying in Switzerland looked at international Google search numbers to determine the most popular book genres in countries where data was available.

“留学瑞士”机构通过分析国际版谷歌的搜索量来获得数据，从而确定各国最受欢迎的书籍类型分别是什么。