During those years, it has been controlled, for the most part, by the broadcast networks, ABC, NBC, and CBS, who have been the major purveyors of news, information, and entertainment.

• 在那些年头中，电视绝大部分一直由abc、NBC、CBS这些广播电视公司控制着，这些广播电视公司一直是新闻、信息和娱乐的主要提供者。