1.
broadcast over the radio
电台播音，无线电广播
2.
turn up the puBlic-address system.
调高播音系统的音量
3.
The announcer interrupted the radio music to give a special piece of news.
播音员停止播放音乐,开始播发一条重要新闻。
4.
the radio announcer's plummy voice.
收音机播音员的圆滑的嗓音。
5.
National association of Broadcasters
全国无线电播音员协会
6.
NAEB (National Association of Educational Broadcasters)
全国教育播音员协会
7.
He broadcasted in the transmitter-receiver in evening yesterday.
他昨天晚上在电台播音。
8.
The radio signed off at midnight.
电台午夜停止播音。
9.
The radio announcer said "It's time to sign off for the day; listen again tomorrow."
电台播音员说：“本台全天播音完毕，请明天再收听。”
10.
digital audio Broadcasting
数字音频广播,[港]数码音频广播,数字音讯广播
11.
Restaurants often play canned music.
饭馆里常播放录音音乐.
12.
A tuning fork transmits sound waves through the air.
音叉通过空气传播声音。
13.
Controls the volume level of recorded and play-back sounds.
控制录制声音和播放声音的音量。
14.
stereo sound television broadcasting
立体声伴音电视广播
15.
Reference tape for broadcast recording
GB/T1781-1979广播录音基准带
16.
Music will Be played on a phonograph.
将用留声机播放音乐。
17.
broadcast reception station
广播接收台[收音台]
18.
the transmission of heat or electricity or sound.
热、电或声音的传播。