名词短语
中文翻译：复制品的数量同义词
同义词：
['copies', 'copies of', 'number of copies']
例句：
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1. We need to make sure that we have enough copies of the manual for everyone.
我们需要确保每个人都有足够的手册副本。
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2. The library has a lot of books in different numbers of copies.
图书馆有很多不同数量副本的书籍。
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3. The teacher asked us to count the number of copies of the textbooks.
老师要求我们数一下教科书的副本数量。