相对有线网络，无线网络最大的优点是可移动性，但是，却要面对恶劣无线通信环境和有限频谱资源的挑战。
Compared to wireline networks, wireless networks have higher removability, while they face the difficulty of bad wireless communication environment and limited spectrum resource.
所以，当制造商在针对无线互联网服务改进设备的功能和表现时，绝对不能忽视可移动性。
Therefore, manufacturers of mobile devices for wireless Internet services should improve the overall functionality and performances of mobile devices without negatively affecting portability.
相对有线网络，无线网络最大的优点是可移动性，但是却要面对恶劣无线通信环境和有限频谱资源的挑战。
Compared to wire line networks, wireless networks have higher mobility, while they face the difficulty of bad wireless communication environment and limited spectrum resource.
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