名词
中文翻译：单臂吊车
同义词：
['single-arm crane', 'single-arm derrick']
例句：
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1. The engineer used a single-arm davit to lift the heavyequipment.
工程师使用单臂吊车来提升重型设备。
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2. The construction crew was using asingle-arm davit to move theheavy materials.
施工队正在使用单臂吊车移动重材料。
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3. The single-arm davit wasessential for the successful completion ofthe project.
单臂吊车对于项目的成功完成至关重要。