If you move closer to the sculptures, you realize they are made up of thousands of carefully stacked small plastic bottles for storing medicines.

VOA: special.2009.07.17

If you think of these kind of like trays in a cafeteria, right, that are kind of upside down, and by default, they're stacked from the floor on up and up and up.

如果你想象这种自助餐厅的托盘，对的，那有点混乱的，默认的，它们从地板开始往上堆起来。

哈佛公开课 - 计算机科学课程节选

The small pieces of paper are carefully stacked to create buildings.

VOA: special.2009.07.17

His father stacked wood used for building,when he had work.

VOA: special.2009.11.01

A dealer who is doing that has stacked the deck.

VOA: special.2009.11.22

And if all of the possible brackets were filled out on standard paper and stacked on top of each other, how big would the pile be?" It would actually go from the earth to the moon and back,1.1 million times,".

VOA: standard.2009.03.25