Even in the mobile communication field, we can use the wireless relay system to replace the wired transmission network.

即使在移动通信领域，也可以用无线中继来替代其有线的传输网。

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During transmission, they employ special collision-avoidance and arrival-acknowledgment techniques that are not required in wired Ethernet LANs.

在传输过程中，他们采用有线以太网不需要的、特殊的避免碰撞和到达应答技术。

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Data transmission is realized by technologies common in everyday life including blue tooth, cell phone, infra-red, wifi, and wired technologies, all of which operate as part of a network.

通过技术实现数据传输常见于生活中的方方面面，包括蓝牙、手机、红外线、无线、有线技术，它们都作为网络的一个组成部分发挥作用。

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