The top of the wall is painted and the bottom is covered in wood paneling.墙顶上刷涂料，底下镶木板。He settled the rifle on the wall top, easing it against his shoulder.他把步枪架在墙顶，使之稳稳地顶靠肩头。The crack runs all the way from the top of the wall to the bottom.裂缝从墙顶一直延伸到墙脚。