stack of work

例句：

1. 1. The boxes are neatly stacked on the shelves.
   盒子整齐地堆放在架子上。
2. 2. She stacked the books in the corner of the room.
   她把书堆在房间的角落里。
3. 3. The workers were stacking crates on the loading dock.
   工人们正在码头上堆放集装箱。