writing on the wall

例句：

1. 1. He decided to write a note on the wall before leaving.
   他决定离开前在墙上写下一张便条。
2. 2.She wrote a message on the wall for her friend to find.
   她给朋友写了一个留言，希望他们能找到。
3. 3. The artist painted a picture of the city on the wall as a tribute to its history.
   艺术家在墙上画了一幅城市画作为对这座城市历史的致敬。