Radio and television are very popular in the ing more. That's because of a transistor. It is very easy to carry. You can put one in your pocket and listen to it on the bus or your bike when you go to work.
电视比收音机更有用。在电视上我们可以看到和听到世界上正在发生的事情。然而，广播也不会被遗弃。它仍与我们同在。而且听众越来越多。这是因为一个晶体管，使得广播便于携带。你可以把一个广播在口袋里，在坐公共汽车或骑自行车去工作时候收听。