名词
中文翻译：重架
同义词：
['heavy lifter', 'heavy crane']
例句：
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1.The heavy derrick was used to lift heavy objects from the ground.
重型起重机被用来从地面举起重物。
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2. He lifted the heavy derrick and started moving it towards the building.
他抬起了重型起重机，开始将它向建筑物移动。
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3. The heavy derrick was a marvel of engineering, capable of lifting massive loads.
重型起重机是工程的奇迹，能够举起巨大的负载。