supplementary
🇺🇸
/ˌsʌplɪˈmentri/
🇬🇧
/ˌsʌplɪˈmentri/
adjective
R
extra, added to make something better or complete
The teacher gave us supplementary materials to help us understand the lesson better.
老师给了我们补充材料，帮助我们更好地理解课程。
translation
补充的