TVs and Radios
TVs are more useful than radios. From TV you can see and hear what is happening in the world. However, radios are not disappearing. They are still with us. And the number of listeners is becoming larger. Do you know why?
One reason for this is the invention of the transistor. A transistor radio can be very small. It is very easy to be carried. Besides, radio broadcasts are better for blind people. Many old people don’t have good eyesight. They can’t watch TV, but can listen to music or news over the radio. What’s more, a radio is cheaper than a TV set.
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电视及收音机
电视比收音机有用。你可以从电视看到和听到在世界上发生的。然而，收音机都没有消失。他们仍然和我们在一起。与听众人数越来越多。你知道为什么吗?
其中一个原因是晶体管的发明。一个晶体管收音机可以非常小。这是很容易被通过。此外，无线电广播是盲人更好。许多老人根本不具备良好的视力。他们可以不看电视，但可以在电台收听音乐或新闻。更重要的是，一个比一个收音机电视机便宜。
