| 例句 |
The radar sends out radio waves and listens for echoes from enemy craft.雷达发出无线电波，捕捉敌机的反射信号。For me, a performance is in front of a microphone, over the radio, to an unseen audience.对我来说，表演就是在麦克风前对着看不见的听众通过无线电波进行的。The air waves are crackling with invective.无线电波中充斥着谩骂声。The ads have begun to fill the airwaves.这些广告已经开始充斥无线电波段。Radio waves are converted into electrical impulses.无线电波被转换成电脉冲。Sound waves, light waves, and radio waves have a certain frequency, or number of waves per second.声波、光波或无线电波等都有特定的频率，或者说是每秒的波数。Many complain that broadcasters pollute the airwaves with sensationalism and sleaze.许多人抱怨说广播公司用耸人听闻的题材和低级庸俗的内容污染了无线电波。When atmospheric conditions are right, radio waves bounce off the ionosphere and can be received many thousands of miles away.在适当的大气条件下，无线电波从电离层反弹回来，在数千英里之外都可以接收得到。Radio waves travel at the speed of light.无线电波以光速传播。The ads have begun to fill network airwaves. 这些广告已经开始充斥无线电波段。 |