你能借我一本大的汉俄词典吗？我要查另一个词。
Why use 一本？
Is there any difference if I say 你能借我大的...？

Question

Answer

Because dictionaries are the same as books, they are tutoring books.

Answer

use 一本 to be more specific, maybe I would lend you two if I have,
 if you just ask 你能借我俄汉大辞典吗，我可能还会问你，你要哪一本（如果我有好几本俄汉词典）？Usually we would say  俄汉or英汉大词典 , 俄汉or英汉小词典  
It is better to say:  你能借我一本俄汉大辞典吗？我想查一个词。谢谢！

Answer

本 is the measure word for books, notebook or dictionary.

Answer

It(本) is a quantifier and is usually used to describe books.

Answer

一本书
a book
通顺

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