The earthen floor, beaten hard by countless feet, deadens the sound of footsteps, and the vaulted mud-brick walls and roof have hardly any sounds to echo.

• 这里的泥土地面,被无数双脚踩踏得硬邦邦的,人走在上面几乎听不到脚步声了,而拱形的泥砖屋顶和墙壁也难得产生什么回音效果。