That public service would be one hour of air time

即每晚单独拿出一小时
set aside every night for informational broadcasting,

用于信息的报道
or what we now call the evening news.

即如今的晚间新闻
Congress, unable to anticipate the enormous capacity

国会没有预料到电视广告
television would have to deliver consumers to advertisers,

会对消费者产生的巨大影响力
failed to include in its deal the one requirement

没能在协议中加入关键一条
that would have changed our national discourse

从而彻底改变全国话语的面貌
immeasurably for the better.

使之倍加完善
Congress forgot to add that under no circumstances

国会忘记加上无论任何情况
could there be paid advertising during informational broadcasting.

在信息报道中不得出现付费广告
They forgot to say that

他们忘记说
taxpayers will give you the airwaves for free

纳税人可以让你免费使用电视广播