It was not until 1920 that regular radio broadcast began.
直到1920年才开始有定期的无线电广播。
Then into broadcasting. with the first ever radio broadcast.
接着，他们跟第一个无线电广播公司合作搞广播事业。
The man whose speech we heard in the radio broadcast is an advanced worker.
我们从无线电广播听到他的讲话的那个人是一位先进工作者。
Operates consoles to control radio or television broadcast transmitters.
通过控制台来控制无线电广播和电视广播发射机。
Operates consoles to control radio or television broadcast transmitters.
通过控制台来控制无线电广播和电视广播发射机。
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