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T-Mobile美国公司周二联合Facebook推出了一项免费的VoIP应用Bobsled,允许Facebook用户通过网页给好友打电话。通过Bobsled,用户无需离开Facebook网站即可进行语音通话,还可以发送语音
T-Mobile U.S. companies launched a free VoIP application called Bobsled on Tuesday in conjunction with Facebook, allowing Facebook users to call their friends via web pages. With Bobsled, users can make voice calls without leaving the Facebook website, and they can also send voice