名词
中文翻译：吊车索具
同义词：
['rigging', 'hoisting gear', 'lifting tackle']
例句：
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1.The derrick was used to lift heavy loads from the ground.
吊车被用来从地面举起重物。
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2. The engineers were busy installing new rigging for the construction site.
工程师们忙于安装新的施工索具。
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3. The derrick was essential for the successful completion of the project.
吊车对于项目的成功完成至关重要。