ar among high school and college students in America with its massive user base and exaggerated growth rate, which could no longer be concealed.The US Internet industry was always an international tre...轉碼失敗！請您使用右上換源切換源站閱讀或者直接前往源網站進行閱讀！轉碼失敗！請您使用右上換源切換源站閱讀或者直接前往源網站進行閱讀！