名词
中文翻译：起重杆
同义词：
['suspension mast', 'lifting pole', 'lifting arm']
例句：
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1. The engineercarefully lifted the heavy lifting mast to the top of the building.
工程师小心翼翼地将沉重的起重杆举到大楼顶部。
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2.The construction workers were using a lifting mast to lift the heavy concrete blocks.
建筑工人正在使用起重杆来举起沉重的混凝土块。
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3. The tall man was standing on the lifting mast, looking down at the city below.
那个高个子男人站在起重杆上，俯瞰着下面的城市。