用一段实墙作为透屏背景

提示词

斜看外屏时，让部分屏后对应实墙、部分对应开口，两种背景在同一机位出现，以读取孔隙和前后间距。

View the outer screen obliquely with one part backed by solid wall and another by an opening in the same frame, making its apertures and stand-off depth legible.