叠

例句：

1. 1. The books are neatly stacked on the shelf.
   书整齐地堆放在书架上。
2. 2. The boxes are piled high in the corner.
   箱子堆得高高的，放在角落。
3. 3. The snow is heaped up against the fence.
   雪堆在篱笆旁。