They have pasted up a notice on the wall.

他们在墙上贴了一张布告。

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　　paste up:fasten with paste to a surface用浆糊把…贴在上面
　　再如:
　　The printer pasted up the first chapter to show the author what his book would look like.
　　印刷工把书的第1章粘贴好了，让作者了解他的书会是什么样的。