So, every season, only about 5 new fictional television series, including both dramas and comedies, from all the major networks, may last into its 5th season.

• 也就是说，每个播放季，全美所有公共电视网加在一起，能坚持到第五季的电视剧，包括正剧和喜剧，大概也只有5部左右。