動詞 rub out:

1. remove by or as if by rubbing or erasing
   同義詞：erase, score out, efface, wipe off

1. The tried to remove the mark from his jacket with a cleaning fluid, but it wouldn't rub out.
   她試圖用清潔劑來除他短上衣上面的污痕，但搓洗不掉。
2. Pencil rubs out easily.
   鉛筆寫的容易擦掉。
3. The ink won't rub out.
   這種墨水擦也擦不掉。
4. He rubbed out the mark on his book.
   他把他書上的記號擦掉了。