layer of wood

例句：

1. 1. The architect designed the building with multiple layers of floors.
   建筑师设计了多层的楼层。
2. 2. The book has several layers of meanings that are not immediately apparent.
   这本书有几个不立即显而易见的含义层面。
3. 3. The scientist analyzed the data from multiple layers to understand the underlying trends.
   科学家分析了数据从多个层面来理解底层趋势。