stacked volume

例句：

1. 1. The mountain was stacked with snow, making it difficult to climb.
   这座山被雪堆满了，使得攀登变得困难。
2. 2.The books were stacked on the shelves, waiting for someone to read them.
   这些书被堆放在书架上，等待着有人去阅读。
3. 3. The boxes were stacked neatly in the warehouse, ready for shipment.
   这些箱子被整齐地堆放在仓库里，准备装运。