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translation and annotation; translation with notes
translator's notes
難しい箇所に訳注をつけた。
She added translator's notes to the difficult passages.
その訳注を読んで意味がよく分かった。
That translator's note made the meaning clear.
訳注には原典の背景が丁寧に説明されていた。
The translator's notes carefully explained the background of the original text.