A more efficient approach for live TV is to “multi-cast” a signal to all handsets using a separate radio network overlaid on the existing mobile network.

更有效的一种方法是让电视直播通过运用分散的网络辐射装置发出讯号，覆盖所有可用的移动网络，从而尽可能大范围地向所有掌上设备散播无线信号。

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They must radio cast the message at once.

他们必须立即广播这条信息。

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Special guests on the August trip include Keillor, along with fellow cast members from the radio show -- Tim Russell, Sue Scott and Fred Newman -- and numerous musical guests, such as The DiGiallonardo Sisters, Bob Douglas and Richard Dworsky.

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