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。

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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.

仅在KDKA电台首次广播的四年后，美国就有600家无线电台开播，其他国家也开播了一些广播电台。

youdao

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.

仅在KDKA电台首次广播的四年后，美国就有600家无线电台开播，其他国家也开播了一些广播电台。

youdao