2.CPU, representing the central processing unit;

3, UFO, the representative thing is UFO;

4, CT, the representative thing is computer X-ray tomography technology;

5. ISO stands for the National Organization for Standardization;

6, KTV, the representative thing is the karaoke box of performing arts or dining places;

7, IQ, the representative thing is IQ;

8, NBA, the representative thing is the American professional basketball league;

9, LED, the representative thing is the light-emitting diode.

Cause of occurrence

1, simple and economical to use.

It should be said that abbreviations were first produced in written language. When a long word, technical term or proper noun appears or is used repeatedly in the text, people think of ways to save time and space, and extract the first letters of such words, technical terms or proper nouns to form abbreviations.

2. Pursuing novelty and vividness

Journalists and writers in newspapers and magazines will never ignore the novelty and vividness of the words they use, and creating such abbreviations has become their constant pursuit of fashion.

3. The meaning is euphemistic and implicit

In real life, people often encounter embarrassing, unpleasant, disgusting and frightening things, so there are many taboos and sensitive words in human language, and English is no exception. A considerable number of abbreviations in English come from the initials of these taboo words and sensitive words, and the new abbreviations make the semantics of the original words euphemistic and implicit.