Air is the medium of the sound.
空气是传播声音的介体。
an announcer whose voice is broadcast on radio.
在广播上传播声音的宣告者。
the transmission of heat or electricity or sound.
热、电或声音的传播。
Air is a medium for sound.
空气是声音的传播媒介。
The broadcasting, reception, or reproduction of sound.
音响声音的传播、接收及重放
Of or relating to the broadcasting or reception of sound.
声频属于或关于声音的传播或接收的
A tuning fork transmits sound waves through the air.
音叉通过空气传播声音。
Designed to carry sound or to aid in hearing.
听觉的用以传播声音或帮助听力的
Her voice carries very well in this big opera house.
在这个大剧院她的声音传播的很好。
That is more than two times the speed of sound.
比声音的传播速度快两倍还多。
Light and sound move in the form of wave.
光线和声音以波的形式传播。
Just how fast does sound travel through the air?
声音在空气中的传播速度究竟有多快？
Radios resound from every house.
家家户户传出收音机的广播声。
Sound is conducted through steel in the same manner as through air.
声音在钢中传播的方式与空气中传播的方式相同。
In water sound travels nearly five times as fast as in air.
声音在水中的传播速度几乎是在空气中传播速度的五倍。
the phenomenon of a propagating wave (light or sound) being thrown back from a surface.
传播中的波（如光或声音）遇到一表面向相反方向传播的现象。
Rather than using pure volume to throw sound far, the LRAD reaches distant ears by focusing the audio beam.
甚至用一种纯洁的声音传播的远远的，LRAD通过聚集的声音柱将声音传到远方的耳朵里。
Then from the portable radio in the corner came the announcer's voice.
从角落里的便携式收音机里传来了播音员的声音。
