将以下文字翻译为英文，做到自然流畅。原文：手机套餐里包含了全国范围内任何时候的一个小时内免费通话时长，并且有多个热门城市的免费流量包可供选择，无需担心流量超出的问题。另外，无论是哪种类型的视频内容，都能流畅观看。要额外说明的是，随时随地可在国内拨打或接听重要紧急情况电话，且全程通话免费。同时，在我们平台上注册时，新用户还可享受3天的免费“漫游通话包”，立马体验国内各大城市之间的通话之便。
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The mobile phone package includes one hour of free nationwide anytime calling, as well as free data packages for multiple popular cities, eliminating concerns about exceeding data limits. Additionally, all types of video content can be watched smoothly. It is also worth mentioning that important and emergency calls can be made and received anywhere in the country at any time, with free calls throughout the process. Moreover, new users can enjoy a 3-day free "roaming calling package" when registering on our platform, immediately experiencing the convenience of calls between major cities in the nation.
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