graywall

例句：

1. 1. The old house has a gray wall that looks like it's been there for centuries.
   那座老房子有一面灰色的墙壁，看起来已经有几百年了。
2. 2.The artist painted the gray wall with vibrant colors.
   艺术家用鲜艳的颜色给灰色的墙壁上色。
3. 3.The gray wall of the building is an eyesore and needs to be painted over.
   这座建筑的灰色墙壁是一处败笔，需要重新粉刷。