"stack" 作为动词的用法如下：

将物品叠放成堆

He ordered them to stack up pillows behind his back.

They stacked the plates in a neat pile on the table.

使物品整齐地放置

Stack the books in the corner of the room.

堆积物品

A stack of straw was placed in the barn.

堆放大量物品

There were stacks of money on the table.

将盘子整理成整齐的一叠并放置在碗橱里

Stack the dishes in the dishwasher after use.

在压力作用下，使松散堆叠的楼层可以彼此独立地来回滑动

Under pressure, a pagoda's loose stack of floors could be made to slither to and fro independent of one another.

这些例句展示了 "stack" 作为动词在不同情境下的用法，包括叠放、整齐放置、堆积和堆放大量物品等。希望这些例子对你有所帮助。