Shū zhōng yǒu duō chù yìzhù, jiěshì le yuánwén de wénhuà bèijǐng.
The book has many translator's notes explaining the cultural background of the original text.
Yìzhù zhǐchū, zhège cíyǔ zài yuán yǔyán zhōng yǒu tèshū hányì.
The translator's note points out that this word has a special meaning in the original language.