wood pile cluster

例句：

1. 1.The wood pile cluster is a great source of energy for the construction industry.
   木堆群是建筑业的一大能源来源。
2. 2. The workers were busy stacking and organizing the wood piles.
   工人们忙着堆放和整理木堆。
3. 3.The wood pile cluster was used to build the new house.
   木堆群被用来建造新房子。