smart mobilephone的用法和样例：
例句
- The famed red phone to call the Russian premier in the event of a national security emergency could now be replaced by a red smart phone.
白宫有台著名的红色电话机，当国家安全面临危机时可以通过它跟俄罗斯总理通话，如今完全可以用红色智能手机取而代之。 - The struggling Silicon Valley smart phone pioneer began selling its own high-end, touchscreen phone in the US over the weekend.
上周末，硅谷先锋智能手机努力开始在美国销售自己的高端触摸屏手机。
