The CPM rates for local advertising campaigns are typically substantially higher than national campaigns because of their more targeted nature.

地方性广告的CPM（千人成本，指的是广告投放过程中，听到或者看到某广告的每一人平均分担到多少广告成本）明显比国家性广告要高出很多，因为他们的目标指向性更加明确。