动词
中文翻译：堆积
同义词：
['heap', 'stack', 'accumulate']
例句：
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1. The pile of books on the desk is too heavy to lift.
桌上那堆书太重了，搬不动。
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2. The farmer piled up the straw for winter use.
农民把稻草堆起来准备过冬。
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3. The children were happily playing with their new toys, building a tower of blocks.
孩子们高兴地玩着他们的新玩具，堆起了积木塔。