不可否认手机在不同的方面便利了我们的生活。
It is undeniable that mobile phones have facilitated our lives in many different ways.
智能手机为我们的生活提供了便利，既然它做出了这么大的贡献，那我就为大家介绍一下手机的特点以及功能和保养方法。
Smart phones for our life provides a convenient, since it made so much contribution, then I can introduce the characteristics and functions of mobile phones and maintenance methods.
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