名词
中文翻译：空心金属丝
同义词：
['hollow bar', 'hollow tube', 'hollow rod']
例句：
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1.The hollow wire is used to support the roof of the building.
空心金属丝用于支撑建筑物的屋顶。
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2. The hollow tube was used as a conduit for carrying water.
空心管被用作输送水的管道。
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3.The hollow rod was used as a support for the heavy machine.
空心棒被用作重型机器的支承。