手机是目前使用最为广泛的移动通讯设备。
Mobile telephone is the most prevalent mobile communication device.
请保持馆区安静，入室请将移动通讯设备置于静音状态；
Please be quiet in the Library. Mobile phones and other electronic devices must be on silent mode when in the reading rooms.
而手机作为现代移动通讯设备中最常见的产品，正朝着多功能化发展。
As a modern mobile phone and mobile communications equipment most common products, is toward multi-purpose development.
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