Mysterious acronyms give the ads the flavor of coded Cold War era shortwave radio broadcasts.
广告里经常用一些故作神秘的缩略词，颇有冷战时期短波电台暗语播报的氛围。
It was not until 1920 that regular radio broadcasts began.
直到1920年才开始有了定期的无线电广播。
It was not until 1920 that regular radio broadcasts began.
直到1920年才开始正规的收音机广播。
The first radio broadcasts were made in Britain in 1927 on short wave.
最早的无线电广播是在1927年在英国利用短波实现的。
The first radio broadcasts were made in Britain in 1927 on short wave.
最早的无线电广播是在1927年在英国利用短波实现的。
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