wallpaper
noun uk/ˈwɔːlˌpeɪ.pər/ us/ˈwɑːlˌpeɪ.pɚ/
(WALL)
[ C or U ]墙纸，壁纸
a thick, often decorative, paper used for covering the walls and sometimes ceilings of a room
a roll of wallpaper 一卷壁纸
We thought we'd put up/hang some wallpaper in the children's bedroom to make it brighter. 我们觉得可以在孩子们的卧室里贴一些壁纸，使屋子显得更明亮些。
I saw a wallpaper today that would be just right for the bathroom. 我今天看到了一种壁纸，正适合用来装饰浴室。
We'll need some wallpaper paste and a big brush. 我们需要一些糊墙纸的糨糊和一把大刷子。
(COMPUTER)
[ U ] computing specialized（电脑）桌面背景
a design or image that you choose to appear on the desktop (= main) screen of your computer
wallpaper
verb [ T ] uk/ˈwɔːlˌpeɪ.pər/ us/ˈwɑːlˌpeɪ.pɚ/
贴上壁纸
to put wallpaper on the walls of a room
We've wallpapered the bedrooms. 我们已经给卧室贴上了壁纸。