its dark paneled walls要怎么理解?

那深色的镶了嵌板的墙
panel名词是木板,这里是动词 ,给.镶板
panel the wall是“给墙 镶嵌板”
paneled wall表示“被镶了板的墙”
类似的还有 painted wall
Old painted wall.老的被粉刷过的墙
Please be careful with the newly painted wall.
请留意新刷的墙
paint the wall刷墙
the painted wall被刷的墙
墙只能被刷,所以表状态的形容词要用被动语态,如果非要用语法说的话.