During the last decade American broadcasters have come to rely on wired services, such as cable, to reach their audience. It is estimated that 85% of a broadcaster's audience is currently wired. Now, a wireless service called mobile DTV is emerging. A wir
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机译：在过去的十年中，美国广播公司开始依靠有线服务（例如电缆）来吸引观众。据估计，目前有85％的广播公司的观众是有线的。现在，正在出现一种称为移动DTV的无线服务。 w
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