电子词典的优势和劣势

电子词典的优势和劣势

Outline:

In the past decade，the market for… has burgeoned, as advances in technology have fueled growing demand among students and other consumers. Today，these … continue to become increasingly … Although… may have some minor disadvantages，these are heavily outweighed by a host of impressive advantages.

The advantages of… are many and varied. First，... Second，…Third，… Fourth，... Finally，… For instance，…In addition，if users …,they can …

Admittedly，… are not without disadvantages. Chief among these is ... Despite the fact that …，… are still… Another disadvantage of… is that …

As tens of millions of … users in China would agree, any limitations or downsides of … are offset by thei r numerous advantages. With ongoing technological advancements, coupled with …, students and others will have even more reason to put … on their shopping list.

Advantages:

portable devices

sophisticated，user-friendly and economical

1)extremely portable and light-weight

the vast sizes of the lexicons they contain---up to one million words

A paper dictionary with a comparable number of words

( extremely large，heavy and cumbersome)

2)are much easier to use than traditional dictionaries

Instead of having to leaf through several pages

scan down the correct page to find a particular entry

electronic dictionary users need only type in the word

Its definition will immediately appear on the screen.

This ease of use

lead to greater efficiency & increased productivity for students or other users.

3)offer a long list of features that make them superior to paper dictionaries.

Common features include a calendar，memo pad，address book，

calculator，unit converter and alarm clock.

4)contain a number of specialized lexicons，

as well as other reference books such as almanacs，phrasebooks and encyclopedias.

5)offer many benefits aimed especially at language learners

may be able to listen to the pronunciation of words

translate sentences from one language to another

or create a set of virtual flash cards

6)if users are unsure of the spelling of a word，

they can input it based on their best guess，

and the dictionary will suggest possible matches.

Disadvantages：

1)the cost

prices have fallen in recent years

more expensive than their paper counterparts.

2)their batteries must be recharged or replaced periodically

most electronic dictionaries indicate the amount of remaining battery life

so that users can recharge or replace the battery at an opportune time