annotation
🇺🇸
/ˌænəˈteɪʃn/
🇬🇧
/ˌænəˈteɪʃn/
A brief explanation or comment added to a text or image to explain or give more information.
The teacher asked students to add annotations to the margins of the book.
老师要求学生在书的边缘添加注释。