adj.成阶层的；有层理的；叠加的
动词superimpose的过去式和过去分词形式.
The recesses and superimposed surfaces provided in this way offer appropriate space for ambient illumination as well as the arrangement of air vents. 深处叠加的表面提供了这种方式提供适当的空间环境照明以及空气通风口安排。
