the tape recorder is one of the most welcome and popular electronic devices ever invented. for example， it can reproduce sounds quite well， which are hardly distinguishable from the original. besides， it is very handy and can be carried around. furthermore， tape recorders are not so expensive as color tv sets or video-tape players， so most families can afford them. therefore， the tape recorder is liked by everyone and has entered most homes.

　　this device is useful in many ways. for example， it is used by people to play music and thus gives them a lot of pleasure. another example is that it is an effective aid for learning a foreign language. it may also serve as a useful tool for many professionals such as reporters and policemen and enables them to work efficiently.

　　however， it can also become a nuisance. some youngsters play the tape recorder late at night and therefore disturb their neighbours' rest. some shop-owners use it to attract customers and they often play music so loudly that customers feel very annoyed with it. thus， the tape recorder should be put to good use.