My soliloquy 10 Dictionary

In my high school, I used a paper dictionary for English class. Some of my friends used electronic dictionaries. Which dictionaries is more useful? I think electronic one is more useful than paper one. It's not heavy and has many function. Electronic dictionary includes not only an English-Japanese dictionary, but also an encyclopedia. However, we can't draw line under the word in a Electronic dictionary. So we may forget the word. I want to use each dictionaries efficiently.
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