noun
translated book; translation
Refers to a book that has been translated from another language; the physical or published work, not the act of translating.
この翻訳書は原著よりも読みやすい。
This translated book is easier to read than the original.
彼はフランス語の翻訳書を何冊も出している。
He has published many French translations.
原著 is the original work, whereas 翻訳書 is the translated version.
Compound of 翻訳 (translation) and 書 (book, document).