动词
中文翻译：堆叠
同义词：
['stack', 'heap', 'pile']
例句：
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1. The boxes were unstacked and moved to the back of the room.
箱子被堆叠起来并移到房间后面。
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2. He unstacked the books from the shelves and began to read them.
他从书架上把书堆叠起来开始阅读。
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3. She unstacked the boxes on the floor and started sorting through them.
她把地板上的盒子堆叠起来开始整理。