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理查德告诉过我16世纪的关于炼金术的三卷对开本书籍的事。
Richard told me of three 16th-century folio volumes on alchemy.
《柯林斯英汉双解大词典》
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他们出版各种不同开本的书籍。
They are producing books in all kinds of different formats.
youdao
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他们出版各种不同开本的书籍。
They are producing books in all kinds of different formats.
youdao