名词
中文翻译：Unknown
同义词：
['double crane', 'double-deckcrane']
例句：
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1.The deck twin crane is used forlifting heavy loads.
双层起重机用于吊起重物。
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2. The construction site has a largenumber of deck twin cranes.
施工现场有大量的双层起重机。
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3. The engineer carefully inspectedthe deck twin crane before starting work.
工程师在开始工作前仔细检查了双层起重机。