名词
中文翻译：摇摆的起重机堆栈
同义词：
['swinging pile', 'swinging stack']
例句：
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1.The construction site was busy with workers swinging booms and stacking materials.
工地上，工人们忙碌地使用起重机和堆放材料。
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2.The engineer had to make adjustments to the swinging boom to ensure safety.
工程师不得不调整摇摆的起重机以确保安全。
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3.The swinging boom was a crucial part of the construction process.
摇摆的起重机是建筑过程的关键部分。