弄白

例句：

1. 1.The clothes were so dirty that they had to be washed again.
   这些衣服太脏了，需要再次清洗。
2. 2. She tried to erase the stains on the white shirt, but it was too late.
   她试图擦掉白衬衫上的污渍，但已经太晚了。
3. 3. After reading the book, I finally understood the main idea of the story.
   读完这本书后，我终于明白了故事的主要意思。