- 1 decade agoFavorite Answer
well, there could be a use of "yellow up" in very informal English. For example, when you read the textbook, you "yellow up" the sections that you don't really understand. Here, the use of "yellow up" means that you "highlight" the said sections using a yellow highlighter.Source(s): me
- Grace TALv 51 decade ago
"yellow up" 在你這篇段落的意思應該是" 用顏色來強調或為不懂處畫線加註解的意思"!
Hope it helps!Source(s): Grace TA's contributions