... 1920年,美国匹兹堡 ,商业广播电台开始播音,呼号 KDKA 美国 全国广播公司 NBC 英国广播公司 BBC ...
双语例句
1
Those first KDKA broadcasts led to the success of the radio industry.
那些最早的商业电台广播引领收音机产业的大获成功。
2
Only four years after the first KDKA broadcast, there were six hundred radio stations in the United States. Radio stations also began to broadcast in other countries.