- 问题详情:Everyday,hundredsofthousandsofusvisitcoffeeshops.Whilewedrinkourcoffee,wemayconnectoursmartphonetotheshop’sWi-Finetwork,andkeepintouchwithfriendsviaservicessuchasFacebook.Aswellassocializing,wemayusethetimeandfreeaccesstoawirelessconnectiont...
- 5173