- 问题详情:FreeWi-Fihasbecomeveryimportanttous:manystoresandshoppingmallsofferit,restaurantsuseittoattractcustomers,andforlibrariesandcoffeeshopsitisamust-haveservice. Evenwhenpeoplearetraveling,theyscanforfreeWi-Fi.Whenselectingorratingahotel,sixi...
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