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1·The Ad Council's pledge is to remain committed and vigilant in establishing a foothold for public service advertising in a rapidly changing media landscape.

广告委员会保证，要在这个瞬息万变的传媒世界，为公益广告建立一个立足之地，并且忠于职守，保持警觉。

2·Since creating the category of public service advertisements (PSAs) in 1942, the Ad Council has played an increasingly critical role in our changing society.

1942年，首次出现了公益广告这个类别，自那时起，广告委员会在我们这个不断变化的社会中扮演着越来越关键的角色。