| 1. | There are at present four television channels .
现在有四个电视频道。 |
| 2. | We can not get channel 4 on our television .
我们的电视机收看不到第4频道。 |
| 3. | He got up and turned the dial .
他站起来调试着电视机的频道。 |
| 4. | Could you switch the tv over ?
请你改换电视频道好吗？ |
| 5. | We can build a 1-million-channel radio receiver for less than $ 1 million .
我们能用不到一百万美元建造一个一百万个频道的接收器。 |
| 6. | A particular frog's calls were recorded on one channel, using a transistor-condenser microphone .
青蛙的叫声用晶体管传声器记录在一个频道上。 |
| 7. | A laser beam travelling through an enclosed tube can carry as much information as 80 million tv channels !
在一个封闭管道中传输的激光束能传送多达8000万个电视频道的信息。 |
| 8. | It will be far more realistic, as we shall see, to speak of quasimonochromatic light which is composed of a narrow range of frequencies .
我们将看到，更为实际的是讨论由窄频道组成的准单色光。 |
| 9. | 5 . auto scan 16 - channel preview p - in - p display
5 .自动扫台16频道预览画中画播放 |
| 10. | ' cause i can see them on the security channel
因为我能从防盗系统频道上看到他们 |
