The damp rising from the ground caused the walls to stain badly.

地面上升起的湿气使墙壁的颜色变得很难看。

《新英汉大辞典》

youdao

I did frame three of my four walls on the ground, then raised them with the chain hoist.

我确实在地面装好四面墙的三个框架，再用链式起重机把它们吊起来。

youdao

Lampposts and other items from the streets were hurled through the walls of the ground floor.

CNN: Doctor's quick thinking saves patients

These walls were a testing ground where Aalto experimented with different textures, materials and designs, playing with brick, stone and ceramic swatches and setting them against various finishes and ornamental plants.

BBC: An Alvar Aalto tour of Finland

Two teams of engineers, one funded by the state of Louisiana and one based at the University of California, Berkley, have previously put the blame on the Army Corps of Engineers and on a weak layer of ground below the canal walls.

NPR: Panel's Report Assigns No Blame in Levee Failures