brushwood layer

例句：

1. 1. The tree's trunk is covered in a thick layer of soft brushwood.
   这棵树的树干上覆盖着一层厚厚的软木。
2. 2. The builders used the layer of wood to build the house.
   建造者使用这层木料来建造房子。
3. 3. The layer of snow was so deep that it was almost impossible to walk through.
   雪层太厚了，几乎不可能走过去。