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1·With the emergence of WIFI (Wireless Fidelity), many problems that can't be solved by cable networks get solved.

无线网络(WIFI, Wireless Fidelity)的出现使许多有线网络解决不了的问题迎刃而解。

2·He installed a wireless fidelity (Wi-Fi) network in the barbershop to offer customers high-speed wireless Internet access.

他在理发店里装设无线上网网络，让顾客享用高速的无线上网服务。