注释 (zhù shì): marginal notes; annotation; to annotate; to add comments to text

When this translator rendered the English poem into Chinese, she deliberately added marginal notes beside the page to explain the allusions and puns used in the poem.

When I was a graduate student, my advisor asked me to annotate this classical Chinese text, writing the pronunciation and meaning of every rare character clearly.

This facsimile edition of ancient books retains a large number of annotations in red ink by Qing dynasty scholars, which are very valuable for studying the academic views of that time.

The editor wrote a note on the manuscript, reminding the author that a certain quotation needed its source verified and version information added.

This textbook has vocabulary annotations at the bottom of every page, explaining Chinese word usage in simple English, making it convenient for international students to study on their own.