If you watched a television broadcast in the United States in the 1970s, 35 to 40 percent of it would have been international news That's down to about 12 to 15 percent.
假如你在70年代的时候 看任一美国晚间电视新闻 会发现有35%到40%的国际新闻内容 现在只有12%到15%