threepiled

例句：

1. 1.The grass was threepiled over the path.
   草地上有三层草。
2. 2. They found three piles of leaves in the forest.
   他们在森林里发现了三层叶子。
3. 3. The children were threepiled on the floor.
   孩子们在地板上堆成了三层。