名词
中文翻译：堆积物
同义词：
['heap', 'mound', 'stack']
例句：
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1. The old books were collected in a pile on the desk.
旧书被堆放在书桌上。
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2. The children were playing in the pile of leaves.
孩子们在树叶堆里玩耍。
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3. The workers were clearing the pile of rubble from the street.
工人们正在清理街道上的一堆瓦砾。